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Mechanisms of formation and isotope fractionation of interstellar molecules on cosmic dust

Research Project

Project/Area Number 24224012
Research Category

Grant-in-Aid for Scientific Research (S)

Allocation TypeSingle-year Grants
Research Field Geochemistry/Astrochemistry
Research InstitutionHokkaido University

Principal Investigator

WATANABE NAOKI  北海道大学, 低温科学研究所, 教授 (50271531)

Co-Investigator(Kenkyū-buntansha) 日高 宏  北海道大学, 低温科学研究所, 助教 (00400010)
大場 康弘  北海道大学, 低温科学研究所, 助教 (00507535)
羽馬 哲也  北海道大学, 低温科学研究所, 助教 (20579172)
Co-Investigator(Renkei-kenkyūsha) KOUCHI Akira  北海道大学, 低温科学研究所, 教授 (60161866)
Project Period (FY) 2012-05-31 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥129,740,000 (Direct Cost: ¥99,800,000、Indirect Cost: ¥29,940,000)
Fiscal Year 2016: ¥14,690,000 (Direct Cost: ¥11,300,000、Indirect Cost: ¥3,390,000)
Fiscal Year 2015: ¥14,950,000 (Direct Cost: ¥11,500,000、Indirect Cost: ¥3,450,000)
Fiscal Year 2014: ¥15,470,000 (Direct Cost: ¥11,900,000、Indirect Cost: ¥3,570,000)
Fiscal Year 2013: ¥31,070,000 (Direct Cost: ¥23,900,000、Indirect Cost: ¥7,170,000)
Fiscal Year 2012: ¥53,560,000 (Direct Cost: ¥41,200,000、Indirect Cost: ¥12,360,000)
Keywords地球外物質化学 / 星間塵表面反応 / 重水素濃集 / 同位体分別 / 化学進化 / 地球外物質科学
Outline of Final Research Achievements

Formation and isotope fractionation of molecules in molecular clouds are very important as the initial stage of chemical evolution toward planetary system. The aim of this project was to clarify the role of physicochemical processes on cosmic ice dust at very low temperatures which are keys in chemical evolution. We have experimentally demonstrated mechanisms of elementary processes for molecular formation and deuteration on ice at around 10 K. We determined diffusion-rates of hydrogen (deuterium) atoms on amorphous ice and formation (and deuteration) pathways and those reaction rates for water and some primordial organic molecules.

Assessment Rating
Verification Result (Rating)

A

Assessment Rating
Result (Rating)

A: Progress in the research is steadily towards the initial goal. Expected research results are expected.

Report

(9 results)
  • 2017 Research Progress Assessment (Verification Result) ( PDF )
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Annual Research Report   Abstract(Research Progress Assessment) ( PDF )   Research Progress Assessment (Result) ( PDF )
  • 2014 Annual Research Report
  • 2013 Annual Research Report
  • 2012 Annual Research Report
  • Research Products

    (144 results)

All 2017 2016 2015 2014 2013 2012 Other

All Int'l Joint Research (6 results) Journal Article (25 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 25 results,  Open Access: 5 results,  Acknowledgement Compliant: 13 results) Presentation (108 results) (of which Int'l Joint Research: 25 results,  Invited: 29 results) Remarks (4 results) Funded Workshop (1 results)

  • [Int'l Joint Research] シュツットガルト大(ドイツ)

    • Related Report
      2016 Annual Research Report
  • [Int'l Joint Research] カイロ大(エジプト)

    • Related Report
      2016 Annual Research Report
  • [Int'l Joint Research] シェルブルック大(カナダ)

    • Related Report
      2016 Annual Research Report
  • [Int'l Joint Research] CSIC(スペイン)

    • Related Report
      2016 Annual Research Report
  • [Int'l Joint Research] カターニャ大(イタリア)

    • Related Report
      2016 Annual Research Report
  • [Int'l Joint Research]

    • Related Report
      2016 Annual Research Report
  • [Journal Article] Simulations and Spectra of Water in CO Matrices2017

    • Author(s)
      R. Escribano, E. Artacho, A. Kouchi, T. Hama, Y. Kimura, H. Hidaka, and N Watanabe
    • Journal Title

      Physical Chemistry Chemical Physics

      Volume: 19 Issue: 10 Pages: 7280-7287

    • DOI

      10.1039/c6cp08248c

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Hydrogenation and Deuteration of C2H2 and C2H4 on Cold Grains: Clue to the Formation Mechanism of C2H6 with Astronomical Interest2017

    • Author(s)
      H. Kobayashi, H. Hidaka, T. Lamberts, T. Hama, H. Kawakita, J. Kaestner, and N. Watanabe
    • Journal Title

      The Astrophysical Journal

      Volume: 837 Issue: 2 Pages: 155-155

    • DOI

      10.3847/1538-4357/837/2/155

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Stepwise formation of H3O+(H2O)n in an ion drift tube: Empirical effective temperature of association/dissociation reaction equilibrium in an electric field2017

    • Author(s)
      Y. Nakai, H.Hidaka, N. Watanabe, T.M.Kojima
    • Journal Title

      Journal of Chemical Physics

      Volume: 144 Issue: 22

    • DOI

      10.1063/1.4953416

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Two-step Process in Homogeneous Nucleation of Alumina in Supersaturated Vapo2016

    • Author(s)
      Shinnosuke Ishizuka, Yuki Kimura, Tomoya Yamazaki, Tetsuya Hama, Naoki Watanabe, Akira Kouchi
    • Journal Title

      Chemistry of Materials

      Volume: 28 Issue: 23 Pages: 8732-8741

    • DOI

      10.1021/acs.chemmater.6b04061

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Negative catalytic effect of water on the reactivity of hydrogen abstraction from the C-H bond of dimethyl ether by deuterium atoms through tunnling at low temperatures2016

    • Author(s)
      Y. Oba, N. Watanabe, A. Kouchi
    • Journal Title

      Chemical Physics Letters

      Volume: 662 Pages: 14-18

    • DOI

      10.1016/j.cplett.2016.07.058

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Hydrogen-deuterium substitution in solid ethanol by surface reactions at low temperatures2016

    • Author(s)
      Y. Oba, K. Osaka, T. Chigai, A. Kouchi, N. Watanabe
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 462 Issue: 1 Pages: 689-695

    • DOI

      10.1093/mnras/stw1714

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Deuterium fractionation during amino acid formation by photolysis of interstellar ice analogs containing deuterated methanol2016

    • Author(s)
      Y. Oba, Y. Takano, N. Watanabe, A. Kouchi
    • Journal Title

      The Astrophysical Journal Letters

      Volume: 827 Issue: 1 Pages: L18-L18

    • DOI

      10.3847/2041-8205/827/1/l18

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] 宇宙の塵の化学:原子から分子・星・惑星系へ2016

    • Author(s)
      羽馬哲也,香内晃,渡部直樹
    • Journal Title

      CHEMISTRY & EDUCATION

      Volume: 64 Issue: 6 Pages: 282-283

    • DOI

      10.20665/kakyoshi.64.6_282

    • NAID

      130006788915

    • ISSN
      0386-2151, 2424-1830
    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Hydrogenation and deuteration of solid benzene toward understanding chemical kinetics and isotopic fractionation on the surfaces of interstellar dust2016

    • Author(s)
      羽馬哲也,植田寛和,渡部直樹,香内晃
    • Journal Title

      Chikyukagaku

      Volume: 50 Issue: 2 Pages: 33-50

    • DOI

      10.14934/chikyukagaku.50.33

    • NAID

      130005158191

    • ISSN
      0386-4073, 2188-5923
    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Matrix sublimation method for the formation of high-density amorphous ice2016

    • Author(s)
      A. Kouchi, T. Hama, Y. Kimura, H. Hidaka, R. Escribano, N. Watanabe
    • Journal Title

      Chemical Physics Letters

      Volume: 658 Pages: 287-292

    • DOI

      10.1016/j.cplett.2016.06.066

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Surface Temperature Dependence of Hydrogen Ortho-Para Conversion on Amorphous Solid Water2016

    • Author(s)
      H. Ueta, N. Watanabe, T. Hama, and A. Kouchi
    • Journal Title

      Physical Review Letters

      Volume: 116 Issue: 25

    • DOI

      10.1103/physrevlett.116.253201

    • NAID

      120005828466

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Statistical ortho-to-para ratio of water desorbed from ice at 10 kelvin2016

    • Author(s)
      T. Hama, A. Kouchi, N. Watanabe
    • Journal Title

      Science

      Volume: 351 Issue: 6268 Pages: 65-67

    • DOI

      10.1126/science.aad4026

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Signatures of quantum-tunneling diffusion of hydrogen atoms on water ice at 10 K2015

    • Author(s)
      K.Kuwahata, T.Hama, A.Kouchi, N.Watanabe
    • Journal Title

      Physical Review Letters

      Volume: 115 Issue: 13 Pages: 133201-133201

    • DOI

      10.1103/physrevlett.115.133201

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Chiral glycine formation on cold interstellar grains by quantum tunneling hydrogen-deuterium substitution reactions2015

    • Author(s)
      Y. Oba, N. Watanabe, Y. Osamura, A.Kouchi,
    • Journal Title

      Chemical Physics Letters

      Volume: 634 Pages: 53-59

    • DOI

      10.1016/j.cplett.2015.05.070

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Quantum Tunneling Observed without Its Characteristic Large Kinetic Isotope Effects2015

    • Author(s)
      T. Hama, H. Ueta, A. Kouchi, N. Watanabe
    • Journal Title

      Proceedings of the National Academy of Sciences of the United States of America

      Volume: 112 Issue: 24 Pages: 7438-7443

    • DOI

      10.1073/pnas.1501328112

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 低温アモルファス氷表面における水素原子の拡散―宇宙における分子進化の鍵―2015

    • Author(s)
      羽馬哲也、香内晃、渡部直樹
    • Journal Title

      日本物理学会誌

      Volume: 70 Pages: 608-613

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Quantum Tunneling Hydrogenation of Solid Benzene and Its Control via Surface Structure2014

    • Author(s)
      T. Hama, H. Ueta, A. Kouchi, N. Watanabe, H. Tachikawa
    • Journal Title

      The Journal of Physical Chemistry Letters

      Volume: 5 Issue: 21 Pages: 3843-3848

    • DOI

      10.1021/jz5019948

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Reaction kinetics and isotope effect of water formation by the surface reaction of solid H2O2 with H atoms at low temperatures2014

    • Author(s)
      Y. Oba, K. Osaka, N. Watanabe, T. Chigai, A. Kouchi
    • Journal Title

      Faraday Discussion

      Volume: 168 Pages: 185-204

    • DOI

      10.1039/c3fd00112a

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Hydrogen isotopic substitution of solid methylamine through atomic surface reactions at low temperatures: A potential contribution to the D/H ratio of methylamine in molecular clouds2014

    • Author(s)
      Y. Oba, T. Chigai, Y. Osamura, N. Watanabe, A. Kouchi
    • Journal Title

      Meteoritics & Planetary Science

      Volume: 49 Issue: 1 Pages: 117-132

    • DOI

      10.1111/maps.12096

    • Related Report
      2014 Annual Research Report 2013 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Surface Processes on Interstellar Amorphous Solid Water:Adsorption, Diffusion, Tunneling, Reaction, and Nuclear-Spin Conversion2013

    • Author(s)
      T.Hama, N.Watanabe
    • Journal Title

      Chemical Reviews

      Volume: 113 Issue: 12 Pages: 8783-8839

    • DOI

      10.1021/cr4000978

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Nuclear spin temperatures of hydrogen and water molecules on amorphous solid water2013

    • Author(s)
      N. Watanabe, T. Hama, A. Kouchi
    • Journal Title

      AIP Conference Proceedings

      Volume: 1543 Pages: 308-316

    • DOI

      10.1063/1.4812625

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Photochemical reaction processes during vacuum-ultraviolet irradiation of water ice2013

    • Author(s)
      Yabushita, et al., (他2名、1番目)
    • Journal Title

      Journal of Photochemistry and Photobiology C: Photochemistry Reviews

      Volume: 印刷中 Pages: 46-61

    • DOI

      10.1016/j.jphotochemrev.2013.01.001

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The Mechanism of surface diffusion of H and D atoms on amorphous solid water: Existence of various potential sites2012

    • Author(s)
      T. Hama
    • Journal Title

      Astrophys. J.

      Volume: 757 Issue: 2 Pages: 12-12

    • DOI

      10.1088/0004-637x/757/2/185

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Water Formation Through a Quantum Tunneling Surface Reaction, OH+H_2 at 10 K2012

    • Author(s)
      Y.Oba, et al
    • Journal Title

      The Astrophysical Journal

      Volume: 749 Issue: 1 Pages: 12-12

    • DOI

      10.1088/0004-637x/749/1/67

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 星間分子雲での微粒子表面における水素の化学物理過程2012

    • Author(s)
      渡部 直樹,香内 晃,羽馬 哲也,日高 宏,大場 康弘, 千貝 健
    • Journal Title

      表面科学

      Volume: 33 Pages: 662-668

    • NAID

      10031136972

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Presentation] 低温環境下における薄膜状C60への水素原子の付加反応2017

    • Author(s)
      中井陽一, 渡部直樹, 大場康弘
    • Organizer
      日本物理学会第72回年次大会
    • Place of Presentation
      大阪大学 豊中キャンパス,大阪府,大阪市
    • Year and Date
      2017-03-17
    • Related Report
      2016 Annual Research Report
  • [Presentation] 素過程から迫る星間塵表面における分子進化:実験的アプローチ2017

    • Author(s)
      渡部直樹
    • Organizer
      シンポジウム「ダスト形成から惑星の多様性へ:宇宙の物質進化における物理と化学のカップリング
    • Place of Presentation
      東京大学小柴ホール,東京都文京区
    • Year and Date
      2017-03-06
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] Hydrogen Physicochemical Processes on Ice Surface at around 10 K: Diffusion, Recombination and Nuclear Spin Conversion2017

    • Author(s)
      Naoki Watanabe
    • Organizer
      34th Symposium on Plasma Processing(SPP34), The 29th Symposium on Plasma Science for Materials(SPSM29)
    • Place of Presentation
      北海道大学学術交流会館,北海道,札幌市
    • Year and Date
      2017-01-16
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] Strong temperature dependence of ortho-to-para conversion of H2 on amorphous solid water at around 10 K2016

    • Author(s)
      N.Watanabe
    • Organizer
      EUROPEAN CONFERNCE ON LABORATORY ASTROPHYSICS (ECLA2016)GAS ON THE ROCKS
    • Place of Presentation
      CSIC, Madrid, Spain
    • Year and Date
      2016-11-21
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Formation of high-density amorphous ice by matrix sublimation method2016

    • Author(s)
      22.A. Kouchi, T. Hama,Y. Kimura, H. Hidaka,R. Escribano, and N. Watanabe
    • Organizer
      Workshop on Interstellar Matter 2016
    • Place of Presentation
      北海道大学,北海道,札幌市
    • Year and Date
      2016-10-19
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Measurements of surface profile of amorphous solid water by a non-contact atomic force microscope2016

    • Author(s)
      H. Hidaka, Y. Sugimoto, A. Kouchi , and N. Watanabe
    • Organizer
      Workshop on Interstellar Matter 2016
    • Place of Presentation
      北海道大学,北海道,札幌市
    • Year and Date
      2016-10-19
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] egative catalytic effect of amorphous solid water on the hydrogen abstraction from dimethyl ether with deuterium atoms at low temperatures2016

    • Author(s)
      Y. Oba, N. Watanabe, and A. Kouchi
    • Organizer
      Workshop on Interstellar Matter 2016
    • Place of Presentation
      北海道大学,北海道,札幌市
    • Year and Date
      2016-10-19
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Experiments on hydrogenation and deuteration of C2H2 and C2H4 on low temperature surfaces : formation mechanism of C2H6 with astronomical interest2016

    • Author(s)
      H. Kobayashi, H. Hidaka,3T. Hama,3H. Kawakita, and N. Watanabe
    • Organizer
      Workshop on Interstellar Matter 2016
    • Place of Presentation
      北海道大学,北海道,札幌市
    • Year and Date
      2016-10-19
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Nuclear spin isomers of photodesorbed water from ice at 10 K2016

    • Author(s)
      T. Hama, A. Kouchi, and N. Watanabe
    • Organizer
      Workshop on Interstellar Matter 2016
    • Place of Presentation
      北海道大学,北海道,札幌市
    • Year and Date
      2016-10-19
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Temperature dependence of ortho-to-para conversion of H2 on amorphous solid water at around 10 K2016

    • Author(s)
      H. Ueta, N. Watanabe, T. Hama, A. Kouchi
    • Organizer
      Workshop on Interstellar Matter 2016
    • Place of Presentation
      北海道大学,北海道,札幌市
    • Year and Date
      2016-10-19
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 疑似星間塵氷の光化学反応で生成するアミノ酸の重水素置換体存在度2016

    • Author(s)
      大場 康弘、高野 淑識、渡部 直樹、香内 晃
    • Organizer
      日本地球化学会第63回年会
    • Place of Presentation
      北海道大学,北海道,札幌市
    • Year and Date
      2016-09-14
    • Related Report
      2016 Annual Research Report
  • [Presentation] Tunneling hydrogenation of acetylene and ethylene on amorphous solid water at very low temperatures2016

    • Author(s)
      Hitomi Kobayashi, Hideyo Kawakita, Hiroshi Hidaka, Tetsuya Hama, Naoki Watanabe
    • Organizer
      第32回化学反応討論会
    • Place of Presentation
      大宮ソニックシティー,埼玉県,さいたま市
    • Year and Date
      2016-06-01
    • Related Report
      2016 Annual Research Report
  • [Presentation] Reaction equilibrium for stepwise attachment/detachment of a water molecule to/from H3O+(H2O)n in electric field of an ion drift tube2016

    • Author(s)
      Yoichi Nakai, Hiroshi Hidaka, Naoki Watanabe, Takao M Kojima
    • Organizer
      第32回化学反応討論会
    • Place of Presentation
      大宮ソニックシティー,埼玉県,さいたま市
    • Year and Date
      2016-06-01
    • Related Report
      2016 Annual Research Report
  • [Presentation] Quantum-tunneling hydrogen abstraction from dimethyl ether-water complex solid at low temperatures: On the effect of complex formation2016

    • Author(s)
      Y. Oba, N. Watanabe, A. Kouchi
    • Organizer
      第32回化学反応討論会
    • Place of Presentation
      大宮ソニックシティー,埼玉県,さいたま市
    • Year and Date
      2016-06-01
    • Related Report
      2016 Annual Research Report
  • [Presentation] 鉄基板上でのFT型触媒反応実験における反応効率の温度依存性2016

    • Author(s)
      木村 勇気、佐藤 理佳子、山 明、永原 裕子、羽馬 哲也、日高 宏、渡部 直樹、香内 晃
    • Organizer
      日本地球惑星科学連合2016年大会
    • Place of Presentation
      幕張メッセ,千葉県,千葉市
    • Year and Date
      2016-05-22
    • Related Report
      2016 Annual Research Report
  • [Presentation] 芳香族炭化水素薄膜の水素化における強い表面構造依存性2016

    • Author(s)
      羽馬哲也
    • Organizer
      日本物理学会第71回年次大会
    • Place of Presentation
      東北学院大学 泉キャンパス (宮城県 仙台市)
    • Year and Date
      2016-03-19
    • Related Report
      2015 Annual Research Report
    • Invited
  • [Presentation] アモルファス氷表面における水素分子核スピン転換の表面温度依存性2016

    • Author(s)
      植田寛和,渡部直樹,羽馬哲也,香内晃
    • Organizer
      日本物理学会第71回年次大会
    • Place of Presentation
      東北学院大学 泉キャンパス (宮城県 仙台市)
    • Year and Date
      2016-03-19
    • Related Report
      2015 Annual Research Report
  • [Presentation] Experimental approach to ortho-to-para ratio of hydrogen and water molecules desorbed from ice at around 10 K2016

    • Author(s)
      Naoki Watanabe
    • Organizer
      Workshop on Astrochemistry in Star and Planet Formation
    • Place of Presentation
      理化学研究所(埼玉県和光市)
    • Year and Date
      2016-02-16
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 反射吸収赤外分光法で探る宇宙の塵の表面化学2016

    • Author(s)
      羽馬 哲也
    • Organizer
      日本分光学会北海道支部シンポジウム
    • Place of Presentation
      北海道大学(北海道札幌市)
    • Year and Date
      2016-01-27
    • Related Report
      2015 Annual Research Report
  • [Presentation] Low-temperature hydrogenation and deuteration of solid aromatic hydrocarbon by tunneling2015

    • Author(s)
      T. Hama
    • Organizer
      From clouds to protoplanetary disk: the astrochemical link
    • Place of Presentation
      Hans Harnack Haus, Berlin, Germany
    • Year and Date
      2015-10-05
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Deuterium chemistry and nuclear spin conversion on grain surfaces: implication to deuterium enrichment2015

    • Author(s)
      N.Watanabe
    • Organizer
      From clouds to protoplanetary disk: the astrochemical link
    • Place of Presentation
      Hans Harnack Haus, Berlin, Germany
    • Year and Date
      2015-10-05
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Deuteration of interstellar glycine on low-temperature surfaces: A possible route to the formation of chiral molecules in dense molecular clouds2015

    • Author(s)
      Y. Oba
    • Organizer
      From clouds to protoplanetary disk: the astrochemical link
    • Place of Presentation
      Hans Harnack Haus, Berlin, Germany
    • Year and Date
      2015-10-05
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 量子トンネル反応による極低温表面でのキラルグリシン生成2015

    • Author(s)
      大場康弘
    • Organizer
      原子衝突学会第40回年会
    • Place of Presentation
      首都大学東京 南大沢キャンパス(東京都八王子市)
    • Year and Date
      2015-09-28
    • Related Report
      2015 Annual Research Report
  • [Presentation] Tunneling hydrogenation and deuteration of solid benzene without large kinetic isotope effects2015

    • Author(s)
      T. Hama, H. Ueta, A. Kouchi, N. Watanabe
    • Organizer
      A symposium to honor Lou Allamandola’s Contributions to the Molecular Universe
    • Place of Presentation
      Annapolis, MD, USA
    • Year and Date
      2015-09-13
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Grain Surface Chemistry: What Happens Without Photons and Ions2015

    • Author(s)
      N. Watanabe
    • Organizer
      A symposium to honor Lou Allamandola’s Contributions to the Molecular Universe
    • Place of Presentation
      Annapolis, MD, USA
    • Year and Date
      2015-09-13
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Formation of deuterated “chiral” glycine by low-temperature surface reactions via quantum tunneling2015

    • Author(s)
      Y. Oba, N. Watanabe, A. Kouchi
    • Organizer
      Goldschmidt2015
    • Place of Presentation
      Prague Congress Center, Czeck Republic
    • Year and Date
      2015-08-16
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] H and He Ion Irradiation Experiments of Corundum: Amorphization of interstellar dust2015

    • Author(s)
      A. Takigawa, T. Matsumoto, N. Watanabe, A. Miyake , K. Yasuda, Y. Nakata , A. Tsuchiyama
    • Organizer
      Goldschmidt2015
    • Place of Presentation
      Prague Congress Center, Czeck Republic
    • Year and Date
      2015-08-16
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 極低温氷表面上での水素分子のオルソ・パラ転換における温度依存性2015

    • Author(s)
      植田寛和, 羽馬哲也, 香内晃, 渡部直樹
    • Organizer
      機能物性融合科学研究会シリーズ(3)「反応と輸送」
    • Place of Presentation
      東京大学物性研究所(千葉県柏市)
    • Year and Date
      2015-06-24
    • Related Report
      2015 Annual Research Report
  • [Presentation] Role of tunneling in the formation and deuterium enrichment of molecules on dust grains2015

    • Author(s)
      N. Watanabe, Y. Oba, T. Hama, H. Hidaka and A. Kouchi
    • Organizer
      Astrobiology Science Conference 2015
    • Place of Presentation
      Hilton Chicago, Illinois, USA
    • Year and Date
      2015-06-15
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Mechanism for the prebiotic emergence of ‘”chirality”: Chiral glycine formation on interstellar grains2015

    • Author(s)
      Y. Oba, N. Watanabe, and A. Kouchi
    • Organizer
      Astrobiology Science Conference 2015
    • Place of Presentation
      Hilton Chicago, Illinois, USA
    • Year and Date
      2015-06-15
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Tunneling Observed without Characteristic Kinetic Isotope Effects in Hydrogenation/deuteration of Solid Benzene2015

    • Author(s)
      T. Hama, H. Ueta, A. Kouchi, N. Watanabe
    • Organizer
      31st Symposium on Chemical Kinetics and Dynamics
    • Place of Presentation
      Hokkaido Univ (北海道札幌市)
    • Year and Date
      2015-06-03
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Hydrogen-deuterium substitution of glycine via quantum-tunneling surface reactions at low temperatures2015

    • Author(s)
      Y. Oba, N. Watanabe, A. Kouchi
    • Organizer
      31st Symposium on Chemical Kinetics and Dynamics
    • Place of Presentation
      Hokkaido Univ (北海道札幌市)
    • Year and Date
      2015-06-03
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Tunneling hydrogenation of acetylene and ethylene on amorphous solid water at very low temperatures2015

    • Author(s)
      H. Kobayashi, H. Kawakita, H. Hidaka, T. Hama, N. Watanabe
    • Organizer
      31st Symposium on Chemical Kinetics and Dynamics
    • Place of Presentation
      Hokkaido Univ (北海道札幌市)
    • Year and Date
      2015-06-03
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Reaction equilibrium for stepwise attachment/detachment of a water molecule to/from H3O+(H2O)n in electric field of an ion drift tube2015

    • Author(s)
      Y. Nakai, H. Hiroshi, N. Watanabe, T. M. Kojima
    • Organizer
      31st Symposium on Chemical Kinetics and Dynamics
    • Place of Presentation
      Hokkaido Univ (北海道札幌市)
    • Year and Date
      2015-06-03
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Separation of H3O+ hydrates which have different formation origins by drift time measurements2015

    • Author(s)
      H. Hidaka, Y. Nakai, T. M. Kojima, N. Watanabe
    • Organizer
      31st Symposium on Chemical Kinetics and Dynamics
    • Place of Presentation
      Hokkaido Univ (北海道札幌市)
    • Year and Date
      2015-06-03
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Surface processes on interstellar dust: thermal diffusion and tunneling reaction2015

    • Author(s)
      T. Hama, A. Kouchi and N. Watanabe
    • Organizer
      Annual meeting / international symposium of Spectroscopical Society of Japan 2015
    • Place of Presentation
      Tokyo Institute of Technology Ookayama campus (東京都目黒区)
    • Year and Date
      2015-06-01
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Experimental Approach to Chemistry of Cosmic Dust2015

    • Author(s)
      N. Watanabe
    • Organizer
      COST Action Our Astrochemical History
    • Place of Presentation
      J. Heyrovský Institute of Physical Chemistry, Czeck Republic
    • Year and Date
      2015-05-25
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Glycine Becomes Chiral by Grain-Surface Reactions at Low Temperatures2015

    • Author(s)
      Y. Oba
    • Organizer
      COST Action Our Astrochemical History
    • Place of Presentation
      J. Heyrovský Institute of Physical Chemistry, Czeck Republic
    • Year and Date
      2015-05-25
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 初期太陽系星雲中でのFT型触媒反応による分子形成の再現実験2015

    • Author(s)
      木村 勇気, 山﨑 智也, 土山 明, 永原 裕子, 羽馬 哲也, 日高 宏, 渡部 直樹, 香内 晃
    • Organizer
      日本地球惑星科学連合2015年大会
    • Place of Presentation
      幕張メッセ 国際会議場 (千葉県千葉市)
    • Year and Date
      2015-05-24
    • Related Report
      2015 Annual Research Report
  • [Presentation] 表面構造により制御される固体ベンゼンの水素原子トンネル付加反応2015

    • Author(s)
      羽馬哲也, 植田 寛和, 香内 晃, 渡部 直樹, 田地川 浩人
    • Organizer
      日本地球惑星科学連合2015年大会
    • Place of Presentation
      幕張メッセ 国際会議場 (千葉県千葉市)
    • Year and Date
      2015-05-24
    • Related Report
      2015 Annual Research Report
  • [Presentation] イオン誘起微粒子核生成 III: 反応速度論的アプローチ2015

    • Author(s)
      渡部 直樹, 中井 陽一, 羽馬 哲也, 日高 宏
    • Organizer
      日本地球惑星科学連合2015年大会
    • Place of Presentation
      幕張メッセ 国際会議場 (千葉県千葉市)
    • Year and Date
      2015-05-24
    • Related Report
      2015 Annual Research Report
  • [Presentation] Experimental approach to nonenergetic physicochemical processes on icy grains2015

    • Author(s)
      N. Watanabe
    • Organizer
      Icy Grain Chemistry for Formation of Complex Organic Molecules: From Molecular Clouds to Protoplanetary Disks, Comets and Meteorites
    • Place of Presentation
      Tokyo Institute of Technology, Tokyo, Japan
    • Year and Date
      2015-03-05 – 2015-03-07
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] What Controls the Diffusion Mechanism of Hydrogen Atom on Ice?2015

    • Author(s)
      N. Watanabe, T. Hama, K. Kuwahata, A. Kouchi
    • Organizer
      Second Workshop on Experimental Laboratory Astrophysics
    • Place of Presentation
      Poipu, Kauai, Hawaii
    • Year and Date
      2015-02-23 – 2015-02-26
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] Molecular Formation Experiment by Catalytic Reaction on Inorganic Surfaces at Low Pressure Environment2015

    • Author(s)
      Y. Kimura, N. Watanabe, A. Tsuchiyama, H. Nagahara, A. Kouchi
    • Organizer
      Second Workshop on Experimental Laboratory Astrophysics
    • Place of Presentation
      Poipu, Kauai, Hawaii
    • Year and Date
      2015-02-23 – 2015-02-26
    • Related Report
      2014 Annual Research Report
  • [Presentation] Controlling Hydrogenation of Solid Benzene by Quantum Tunneling via Surface Structure2015

    • Author(s)
      T. Hama, H. Ueta, A. Kouchi, N. Watanabe, and H. Tachikawa
    • Organizer
      Second Workshop on Experimental Laboratory Astrophysics
    • Place of Presentation
      Poipu, Kauai, Hawaii
    • Year and Date
      2015-02-23 – 2015-02-26
    • Related Report
      2014 Annual Research Report
  • [Presentation] Water Formation by Reaction of Solid Hydrogen Peroxide with Hydrogen Atoms at Low Temperatures via Quantum Tunneling2015

    • Author(s)
      K. Osaka , Y. Oba , A. Kouchi , N. Watanabe
    • Organizer
      Second Workshop on Experimental Laboratory Astrophysics
    • Place of Presentation
      Poipu, Kauai, Hawaii
    • Year and Date
      2015-02-23 – 2015-02-26
    • Related Report
      2014 Annual Research Report
  • [Presentation] In-situ observation of ices by ultrahigh vacuum transmission electron microscope and atomic force microscope2014

    • Author(s)
      A. Kouchi, H. Hidaka, Y. Kimura, T. Hama, and N. Watanabe
    • Organizer
      Workshop on Interstellar Matter 2014
    • Place of Presentation
      Hokkaido University, Sapporo
    • Year and Date
      2014-10-16 – 2014-10-18
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] Experiments for ionic cluster formation using an ion drift-tube with selected-ion injection2014

    • Author(s)
      Y. Nakai, H. Hidaka, N. Watanabe and T. M. Kojima
    • Organizer
      Workshop on Interstellar Matter 2014
    • Place of Presentation
      Hokkaido University, Sapporo
    • Year and Date
      2014-10-16 – 2014-10-18
    • Related Report
      2014 Annual Research Report
  • [Presentation] Formation of H3O+ hydrate by NO+ injection into drift tube filled with H2O/buffer gases: separation between the contributions of two formation pathways by the drift time measurements2014

    • Author(s)
      H. Hidaka, Y. Nakai, T. M. Kojima, and N. Watanabe
    • Organizer
      Workshop on Interstellar Matter 2014
    • Place of Presentation
      Hokkaido University, Sapporo
    • Year and Date
      2014-10-16 – 2014-10-18
    • Related Report
      2014 Annual Research Report
  • [Presentation] Reproductive experiment of organic formation by catalytic reactions in the solar nebula2014

    • Author(s)
      Y. Kimura, N. Watanabe, A. Tsuchiyama, H. Nagahara, and A. Kouchi
    • Organizer
      Workshop on Interstellar Matter 2014
    • Place of Presentation
      Hokkaido University, Sapporo
    • Year and Date
      2014-10-16 – 2014-10-18
    • Related Report
      2014 Annual Research Report
  • [Presentation] Hydrogen atom addition reactions to solid benzene by quantum tunneling and its strong structure dependence2014

    • Author(s)
      T. Hama, H. Ueta, A. Kouchi, N. Watanabe, and H Tachikawa
    • Organizer
      Workshop on Interstellar Matter 2014
    • Place of Presentation
      Hokkaido University, Sapporo
    • Year and Date
      2014-10-16 – 2014-10-18
    • Related Report
      2014 Annual Research Report
  • [Presentation] H-D Substitution Reactions of Solid Ethanol with Atomic Deuterium via Quantum Tunneling at Low Temperatures2014

    • Author(s)
      K. Osaka, Y. Oba, A. Kouchi, and N. Watanabe
    • Organizer
      Workshop on Interstellar Matter 2014
    • Place of Presentation
      Hokkaido University, Sapporo
    • Year and Date
      2014-10-16 – 2014-10-18
    • Related Report
      2014 Annual Research Report
  • [Presentation] Hydrogen addition reactions of simple aliphatic hydrocarbons (C2H2 and C2H4) ~ clue to the formation mechanism of cometary C2H6~2014

    • Author(s)
      H. Kobayashi, N. Watanabe, H. Hidaka, T. Hama, Y. Watanabe, and H. Kawakita
    • Organizer
      Workshop on Interstellar Matter 2014
    • Place of Presentation
      Hokkaido University, Sapporo
    • Year and Date
      2014-10-16 – 2014-10-18
    • Related Report
      2014 Annual Research Report
  • [Presentation] マトリックス昇華法による真空中での高圧氷の作製2014

    • Author(s)
      香内 晃, 羽馬 哲也, 木村 勇気, 日高 宏, 渡部 直樹
    • Organizer
      日本鉱物科学会
    • Place of Presentation
      熊本大学、熊本市
    • Year and Date
      2014-09-17 – 2014-09-19
    • Related Report
      2014 Annual Research Report
  • [Presentation] 星間塵表面反応で生成する水の水素同位体組成2014

    • Author(s)
      大場 康弘, 渡部 直樹, 香内 晃
    • Organizer
      日本地球化学会年会
    • Place of Presentation
      富山大学,富山市
    • Year and Date
      2014-09-16 – 2014-09-18
    • Related Report
      2014 Annual Research Report
  • [Presentation] ダスト表面における水素分子形成過程:実験からのアプローチ2014

    • Author(s)
      渡部直樹
    • Organizer
      日本天文学会
    • Place of Presentation
      山形大学, 山形市
    • Year and Date
      2014-09-11 – 2014-09-13
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] Nuclear spin temperatures of hydrogen and water molecules formed and trapped on ice2014

    • Author(s)
      N. Watanabe
    • Organizer
      Nuclear Spin Effects in Astrochemistry
    • Place of Presentation
      Chalmers University of Technology, Gothenburg, Sweden
    • Year and Date
      2014-06-09 – 2014-06-11
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] 宇宙における分子進化と低温星間塵表面での原子分子過程2014

    • Author(s)
      渡部直樹
    • Organizer
      原子・分子・光科学(AMO)討論会
    • Place of Presentation
      大阪大学,大阪市
    • Year and Date
      2014-06-06 – 2014-06-07
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] Water formation in space: quantum-tunneling surface reaction H2O2 + H at low temperatures2014

    • Author(s)
      Y. Oba, N. Watanabe, A. Kouchi
    • Organizer
      第30回化学反応討論会
    • Place of Presentation
      イーグレ姫路,姫路市
    • Year and Date
      2014-06-04 – 2014-06-06
    • Related Report
      2014 Annual Research Report
  • [Presentation] Dramatic change in hydrogenation efficiency of solid benzene at low temperature between the crystalline and amorphous surfaces2014

    • Author(s)
      T. Hama, H. Ueta, A. Kouchi, N. Watanabe
    • Organizer
      第30回化学反応討論会
    • Place of Presentation
      イーグレ姫路,姫路市
    • Year and Date
      2014-06-04 – 2014-06-06
    • Related Report
      2014 Annual Research Report
  • [Presentation] 極低温原子間力顕微鏡によるアモルファス氷の表面構造観察2014

    • Author(s)
      日髙 宏, 杉本 宜昭, 中坪 俊一, 渡部 直樹, 香内 晃
    • Organizer
      日本地球惑星科学連合
    • Place of Presentation
      パシフィコ横浜,横浜市
    • Year and Date
      2014-04-28 – 2014-05-02
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] イオン誘起微粒子核生成I:装置開発とねらい2014

    • Author(s)
      渡部 直樹, 日髙 宏, 中井 陽一, 小島 隆夫
    • Organizer
      日本地球惑星科学連合
    • Place of Presentation
      パシフィコ横浜,横浜市
    • Year and Date
      2014-04-28 – 2014-05-02
    • Related Report
      2014 Annual Research Report
  • [Presentation] 固体表面におけるC2H2 分子水素付加反応:彗星C2H6 生成の解明に向けて2014

    • Author(s)
      小林 仁美, 渡部 直樹, 日髙 宏, 羽馬 哲也, 渡邊 陽司, 河北 秀世
    • Organizer
      日本地球惑星科学連合
    • Place of Presentation
      パシフィコ横浜,横浜市
    • Year and Date
      2014-04-28 – 2014-05-02
    • Related Report
      2014 Annual Research Report
  • [Presentation] イオン誘起微粒子生成Ⅱ:水クラスターイオンの自由エネルギー2014

    • Author(s)
      日髙 宏, 中井 陽一, 小島 隆夫, 渡部 直樹
    • Organizer
      日本地球惑星科学連合
    • Place of Presentation
      パシフィコ横浜,横浜市
    • Year and Date
      2014-04-28 – 2014-05-02
    • Related Report
      2014 Annual Research Report
  • [Presentation] Reaction kinetics and isotope effect of water formation by the surface reaction of solid H2O2 with H atoms at low temperatures2014

    • Author(s)
      Y. Oba, K. Osaka, N. Watanabe, T. Chigai, A. Kouchi
    • Organizer
      Faraday Discussion 168 Astrochemistry of Dust, Ice and Gas
    • Place of Presentation
      NH Conference Centre, Leiden, The Netherlands
    • Year and Date
      2014-04-07 – 2014-04-09
    • Related Report
      2014 Annual Research Report
  • [Presentation] Cyclohexane formation following Hydrogenation of amorphous solid benzene at 20 K2014

    • Author(s)
      T. Hama, H. Ueta, A. Kouchi, N. Watanabe
    • Organizer
      Faraday Discussion 168 Astrochemistry of Dust, Ice and Gas
    • Place of Presentation
      NH Conference Centre, Leiden, The Netherlands
    • Year and Date
      2014-04-07 – 2014-04-09
    • Related Report
      2014 Annual Research Report
  • [Presentation] Hydrogen addition reactions of C2H2 on cold grains; clue to the formation mechanism of cometary C2H62014

    • Author(s)
      H. Kobayashi, N. Watanabe, H. Hidaka, T. Hama, Y. Watanabe, H. Kawakita
    • Organizer
      Faraday Discussion 168 Astrochemistry of Dust, Ice and Gas
    • Place of Presentation
      NH Conference Centre, Leiden, The Netherlands
    • Year and Date
      2014-04-07 – 2014-04-09
    • Related Report
      2014 Annual Research Report
  • [Presentation] 極低温固体エタノールの水素-重水素トンネル置換反応2014

    • Author(s)
      尾坂和哉,大場康弘,香内晃,渡部直樹
    • Organizer
      日本物理学会
    • Place of Presentation
      東海大学湘南キャンパス,平塚市
    • Related Report
      2013 Annual Research Report
  • [Presentation] イオン打ち込み型移動管を用いた水和クラスターイオンの生成実験の現状42014

    • Author(s)
      中井陽一,日高宏,渡部直樹,小島隆夫
    • Organizer
      日本物理学会
    • Place of Presentation
      東海大学湘南キャンパス,平塚市
    • Related Report
      2013 Annual Research Report
  • [Presentation] Development of an ultrahigh vacuum transmission electron mircoscope for in-situ observation of ice2014

    • Author(s)
      A.Kouchi, N.Watanabe, H. Hidaka, T.Hama, S. Nakatsubo, K. Fujita, K. Sinbori, M. Ikeda
    • Organizer
      13th International Conference on the Physics and Chemistry of Ice(PCI-2014)
    • Place of Presentation
      Dartmauth University, USA
    • Related Report
      2013 Annual Research Report
  • [Presentation] Role of quantum tunneling for the formation of H2O by reaction of H2 with OH on interstellar grains2014

    • Author(s)
      Yasuhiro Oba, Naoki Watanabe, Tetsuya Hama, Kazuaki Kuwahata, Hiroshi Hidaka, Akira Kouchi
    • Organizer
      247th ACS Chemistry & Materials for Energy
    • Place of Presentation
      Dallas Convention Cente, USA
    • Related Report
      2013 Annual Research Report
  • [Presentation] Diffusion of hydrogen atom on ice: Thermal or tunneling?2014

    • Author(s)
      Naoki Watanabe, Kazuaki Kuwahata, Tetsuya Hama, Akira Kouchi.
    • Organizer
      247th ACS Chemistry & Materials for Energy
    • Place of Presentation
      Dallas Convention Center, USA
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] 低温氷星間塵表面における水素の化学2014

    • Author(s)
      渡部直樹
    • Organizer
      自然科学研究機構「自然科学における階層と全体」シンポジウム
    • Place of Presentation
      桑山ビル8階会議場,名古屋
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] 星間塵表面反応による分子進化2013

    • Author(s)
      日高 宏
    • Organizer
      「宇宙における分子進化:星間雲から原始惑星系へ」平成25年度研究集会
    • Place of Presentation
      北海道大学,札幌
    • Related Report
      2013 Annual Research Report
  • [Presentation] 分子雲有機物の生成・分析にむけた光化学反応実験装置の開発2013

    • Author(s)
      羽馬 哲也
    • Organizer
      「宇宙における分子進化:星間雲から原始惑星系へ」平成25年度研究集会
    • Place of Presentation
      北海道大学,札幌
    • Related Report
      2013 Annual Research Report
  • [Presentation] 固体ベンゼンの水素原子トンネル付加反応によるシクロヘキサン生成2013

    • Author(s)
      羽馬哲也, 植田寛和, 渡部直樹, 香内晃
    • Organizer
      第38回原子衝突学会年会
    • Place of Presentation
      理化学研究所,和光市
    • Related Report
      2013 Annual Research Report
  • [Presentation] 氷表面における水素原子の熱拡散およびトンネル拡散の実験研究2013

    • Author(s)
      桑畑和明, 羽馬哲也, 日高宏, 香内晃, 渡部直樹
    • Organizer
      第38回原子衝突学会年会
    • Place of Presentation
      理化学研究所,和光市
    • Related Report
      2013 Annual Research Report
  • [Presentation] 極低温表面反応によるエタノールの水素-重水素交換2013

    • Author(s)
      尾坂和哉, 大場康弘, 香内晃, 渡部直樹
    • Organizer
      第38回原子衝突学会年会
    • Place of Presentation
      理化学研究所,和光市
    • Related Report
      2013 Annual Research Report
  • [Presentation] 極低温原子表面反応によるエタノールの水素-重水素交換反応2013

    • Author(s)
      尾坂和哉, 大場康弘, 香内晃, 渡部直樹
    • Organizer
      第34回原子衝突若手の会
    • Place of Presentation
      熱海姫の沢自然の家,熱海市
    • Related Report
      2013 Annual Research Report
  • [Presentation] 低温アモルファス氷上での水素原子表面拡散の同位体効果2013

    • Author(s)
      桑畑和明,羽馬哲也,日高宏,香内晃,渡部直樹
    • Organizer
      日本物理学会
    • Place of Presentation
      徳島大学常三島キャンパス,徳島市
    • Related Report
      2013 Annual Research Report
  • [Presentation] イオン打ち込み型移動管を用いた水和クラスターイオンの生成実験の現状2013

    • Author(s)
      中井陽一,日高宏,渡部直樹,小島隆夫
    • Organizer
      日本物理学会
    • Place of Presentation
      徳島大学常三島キャンパス,徳島市
    • Related Report
      2013 Annual Research Report
  • [Presentation] Isotope Effect in the Formation of Solid Water by Surface Reactions at 10 K2013

    • Author(s)
      Y. Oba, N. Watanabe, A Kouchi
    • Organizer
      Goldschmidt2013
    • Place of Presentation
      Firenze Fiera Congress and Exhibition Centre, Italy
    • Related Report
      2013 Annual Research Report
  • [Presentation] Ion Irradiation Experiments to Olivine: Comparison with Space Weathering Rims of Itokawa and Lunar Regolith Particles2013

    • Author(s)
      23. T. Matsumoto, A. Tsuchiyama, A. Takigawa, K. Yasuda, Y. Nakata, N. Watanabe, A .Kouchi, M. Nakamura, A. Miyake, M. Ohtake
    • Organizer
      Goldschmidt2013
    • Place of Presentation
      Firenze Fiera Congress and Exhibition Centre, Italy
    • Related Report
      2013 Annual Research Report
  • [Presentation] The Ortho-Para Ratio of H2O Desorbed from Ice: Implications for Cometary Coma2013

    • Author(s)
      T. Hama, A. Kouchi, N. Watanabe
    • Organizer
      Goldschmidt2013
    • Place of Presentation
      Firenze Fiera Congress and Exhibition Centre, Italy
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] Isotope effect on hydrogen abstraction and addition reactions of the solid formaldehyde at low temperatures2013

    • Author(s)
      H. Hidaka, A. Kouchi, N. Watanabe
    • Organizer
      29th Symposium on Chemical Kinetics and Dynamics
    • Place of Presentation
      Katahira Sakura Hall, Tohoku Univ., Sendai
    • Related Report
      2013 Annual Research Report
  • [Presentation] Surface number density of physisorbed H and D atoms on water ice during continuous atomic deposition2013

    • Author(s)
      K. Kuwahata, T. Hama, A. Kouchi, N. Watanabe
    • Organizer
      29th Symposium on Chemical Kinetics and Dynamics
    • Place of Presentation
      Katahira Sakura Hall, Tohoku Univ, Sendai
    • Related Report
      2013 Annual Research Report
  • [Presentation] Experimental study of quantum-tunneling surface reaction OH + H2 → H2O+ H at 10 K2013

    • Author(s)
      Y. Oba, N. Watanabe, T. Hama, H. Hidaka., K. Kuwahata, A. Kouchi
    • Organizer
      29th Symposium on Chemical Kinetics and Dynamics
    • Place of Presentation
      Katahira Sakura Hall, Tohoku Univ, Sendai
    • Related Report
      2013 Annual Research Report
  • [Presentation] 星間塵表面反応による水と有機物の共進化2013

    • Author(s)
      大場康弘
    • Organizer
      JPGU meeting 2013
    • Place of Presentation
      幕張メッセ, 千葉市
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] Formation of H2O Ice on Cold Interstellar Grains: Reaction Kinetics and the Structure of Ice, Workshop on Ice and Water Films2013

    • Author(s)
      Y. Oba
    • Organizer
      Workshop on Ice and Water Films
    • Place of Presentation
      Seoul National Univ., South Korea
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] Ortho-to-para Ratio of Water Molecules Thermally Desorbed from Ice2013

    • Author(s)
      T. Hama
    • Organizer
      Workshop on Ice and Water Films
    • Place of Presentation
      Seoul National Univ., South Korea
    • Related Report
      2013 Annual Research Report
  • [Presentation] 表面への水素・重水素原子照射による吸着原子数密度の同位体依存性2013

    • Author(s)
      桑畑和明
    • Organizer
      日本物理学会第68回年次大会
    • Place of Presentation
      広島大学 (東広島市)
    • Related Report
      2012 Annual Research Report
  • [Presentation] Physics and chemistry of hydrogen on cosmic dust: diffusion, spin temperatures, and water formation2013

    • Author(s)
      N. Watanabe
    • Organizer
      First Workshop on Experimental Laboratory Astrophysics
    • Place of Presentation
      Sheraton Kauai (USA)
    • Related Report
      2012 Annual Research Report
    • Invited
  • [Presentation] Experimental measurements of nuclear-spin temperature of thermally desorbed water molecules from ice2013

    • Author(s)
      T. Hama
    • Organizer
      First Workshop on Experimental Laboratory Astrophysics
    • Place of Presentation
      Sheraton Kauai (USA)
    • Related Report
      2012 Annual Research Report
  • [Presentation] Hydrogen isotopic fractionation of solid methylamine through atomic-surface reactions at 10K2013

    • Author(s)
      Y. Oba
    • Organizer
      First Workshop on Experimental Laboratory Astrophysics
    • Place of Presentation
      Sheraton Kauai (USA)
    • Related Report
      2012 Annual Research Report
  • [Presentation] Surface diffusion mechanism of H and D atoms on amorphous solid water2013

    • Author(s)
      K. Kuwahata
    • Organizer
      First Workshop on Experimental Laboratory Astrophysics
    • Place of Presentation
      Sheraton Kauai (USA)
    • Related Report
      2012 Annual Research Report
  • [Presentation] Physicochemical processes of hydrogen on ice: A key for chemical evolution in space2013

    • Author(s)
      N. Watanabe
    • Organizer
      2nd International Symposium on Hierarchy and Holism
    • Place of Presentation
      学術総合センター (東京)
    • Related Report
      2012 Annual Research Report
    • Invited
  • [Presentation] Surface diffusion mechanism of atomic hydrogen and the ortho/para ratio of nascent H2 molecule on amorphous solid water at around 10 K2012

    • Author(s)
      N. Watanabe
    • Organizer
      International Lorentz Center Workshop: Dynamical Phenomena at Surfaces:The Role of Complexity
    • Place of Presentation
      Leiden University (The Netherlands)
    • Related Report
      2012 Annual Research Report
    • Invited
  • [Presentation] Laboratory study of solid H2O formation through quantum tunneling reaction OH + H2 at 10 K2012

    • Author(s)
      Y. Oba
    • Organizer
      International Lorentz Center Workshop: Dynamical Phenomena at Surfaces:The Role of Complexity
    • Place of Presentation
      Leiden University (The Netherlands)
    • Related Report
      2012 Annual Research Report
  • [Presentation] Grain surface processes at very low temperatures: hydrogen diffusion and tunneling reactions2012

    • Author(s)
      N. Watanabe
    • Organizer
      Gordon Research Conference on Radiation Chemistry
    • Place of Presentation
      Proctor Academy (USA)
    • Related Report
      2012 Annual Research Report
    • Invited
  • [Presentation] Spin temperature of water molecules desorbed from ice produced by photolysis of a CH4/O2 solid mixture and its implication in a cometary coma2012

    • Author(s)
      T. Hama
    • Organizer
      Gordon Research Conference on Radiation Chemistry
    • Place of Presentation
      Proctor Academy (USA)
    • Related Report
      2012 Annual Research Report
  • [Presentation] Formation of solid H2O through surface reactions of H2 with OH radicals produced by microwave-induced H2O plasma2012

    • Author(s)
      Y. Oba
    • Organizer
      Gordon Research Conference on Radiation Chemistry
    • Place of Presentation
      Proctor Academy (USA)
    • Related Report
      2012 Annual Research Report
  • [Presentation] Hydrogen processes on dust grains: H atom diffusion and water formation2012

    • Author(s)
      N. Watanabe
    • Organizer
      39th COSPAR Scientific Assembly
    • Place of Presentation
      Infosys training center (India)
    • Related Report
      2012 Annual Research Report
    • Invited
  • [Presentation] Formation routes of deuterated formaldehyde and methanol by tunneling reaction on amorphous solid water at 10-20K2012

    • Author(s)
      H. Hidaka
    • Organizer
      39th COSPAR Scientific Assembly
    • Place of Presentation
      Infosys training center (India)
    • Related Report
      2012 Annual Research Report
    • Invited
  • [Presentation] Spin temperatures of hydrogen and water molecules on amorphous solid water2012

    • Author(s)
      N. Watanabe
    • Organizer
      Chemical Evolution of Star Forming Region and Origin of Life (ASTROCHEM2012)
    • Place of Presentation
      S.N. Bose National Centre (India)
    • Related Report
      2012 Annual Research Report
    • Invited
  • [Presentation] Formation of deuterated formaldehyde on low temperature surface: isotope effect of quantum tunneling reactions2012

    • Author(s)
      H. Hidaka
    • Organizer
      Chemical Evolution of Star Forming Region and Origin of Life (ASTROCHEM2012)
    • Place of Presentation
      S.N. Bose National Centre (India)
    • Related Report
      2012 Annual Research Report
    • Invited
  • [Presentation] Laboratory measurements of spin temperature of water molecules from ice in thermal desorption2012

    • Author(s)
      T. Hama
    • Organizer
      Workshop on Interstellar Matter 2012
    • Place of Presentation
      北海道大学 (札幌)
    • Related Report
      2012 Annual Research Report
  • [Presentation] Deuterium fractionation of methylamine through atomic grain-surface reactions at low temperatures: implication for the possible D/H ratio in molecular clouds2012

    • Author(s)
      Y. Oba
    • Organizer
      Workshop on Interstellar Matter 2012
    • Place of Presentation
      北海道大学 (札幌)
    • Related Report
      2012 Annual Research Report
  • [Presentation] 極低温表面における過酸化水素と水素原子の反応による水生成とその同位体効果2012

    • Author(s)
      大場康弘
    • Organizer
      日本地球化学会2012年会
    • Place of Presentation
      九州大学 (福岡市)
    • Related Report
      2012 Annual Research Report
  • [Remarks] 北海道大学低温科学研究所 宇宙物質・宇宙雪氷グループHP

    • URL

      http://www.lowtem.hokudai.ac.jp/astro/index.html

    • Related Report
      2016 Annual Research Report
  • [Remarks]

    • URL

      http://www.lowtem.hokudai.ac.jp/astro/

    • Related Report
      2015 Annual Research Report
  • [Remarks] http://www.lowtem.hokudai.ac.jp/astro/index.html

    • Related Report
      2014 Annual Research Report
  • [Remarks] 宇宙物質科学・宇宙雪氷学グループ

    • URL

      http://www.lowtem.hokudai.ac.jp/astro/

    • Related Report
      2013 Annual Research Report
  • [Funded Workshop] Workshop on Interstellar Matter 20162016

    • Place of Presentation
      Hokkaido University, Sapporo
    • Year and Date
      2016-10-19
    • Related Report
      2016 Annual Research Report

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Published: 2012-11-27   Modified: 2019-07-29  

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