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2012 Fiscal Year Final Research Report

Observation of surface structure of amorphous ice and role of amorphous ice in surface atomic reactions at low temperatures

Research Project

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Project/Area Number 22340157
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Petrology/Mineralogy/Science of ore deposit
Research InstitutionHokkaido University

Principal Investigator

KOUCHI Akira  北海道大学, 低温科学研究所, 教授 (60161866)

Co-Investigator(Kenkyū-buntansha) WATANABE Naoki  北海道大学, 低温科学研究所, 教授 (50271531)
HIDAKA Hiroshi  北海道大学, 低温科学研究所, 助教 (00400010)
Project Period (FY) 2010 – 2012
Keywordsアモルファス氷 / 原子間力顕微鏡 / 表面構造 / 低温 / 表面原子反応 / 水分子
Research Abstract

An ultrahigh vacuum low temperature atomic force microscope for in-situ deposition of amorphous ice and for observation of ice surface has been developed. We have succeeded to observe the surface structure of amorphous ice and found that the surface of amorphous ice is very porous. This might cause the catalytic properties of amorphous ice in surface atomic reactions.

  • Research Products

    (15 results)

All 2013 2012 2011 2010 Other

All Journal Article (8 results) (of which Peer Reviewed: 8 results) Presentation (6 results) Remarks (1 results)

  • [Journal Article] Water formation through a quantum tunneling surface reaction, OH + H_2, at 102012

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

      K, Astrophys. J

      Volume: 749(1) Pages: 67(12)

    • DOI

      DOI:10.1088/0004-637 X/749/1/67

    • 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, K. Kuwahata, N. Watanabe, A.Kouchi, Y. Kimura. T. Chigai, V. Pirronello
    • Journal Title

      Astrophys. J

      Volume: 757(2) Pages: 185(12)

    • DOI

      DOI:10.1088/0004-63 X/757/2/185

    • 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(12) Pages: 662-668

    • DOI

      DOI:10.1380/jsssj.33.662

    • Peer Reviewed
  • [Journal Article] FTIR study of ammonia formation via the successive hydrogenation of N atoms trapped in a solid N2 matrix at low temperatures2011

    • Author(s)
      H. Hidaka, M. Watanabe, A. Kouchi, N.Watanabe
    • Journal Title

      Phys. Chem. Chem. Phys

      Volume: 13, 35 Pages: 15798-15802

    • DOI

      DOI:10.1039/c1cp20645a

    • Peer Reviewed
  • [Journal Article] Experimental studies of surface reactions among OH radicals that yield H_2O and CO_2 at 40-60 K2011

    • Author(s)
      Y. Oba, N. Watanabe, A. Kouchi, T. Hama, V. Pirronello
    • Journal Title

      Phys. Chem. Chem. Phys

      Volume: 13, 35 Pages: 15792-15797

    • DOI

      DOI:10.1039/c1cp20596j

    • Peer Reviewed
  • [Journal Article] Spin temperature of water molecules desorbed from the surfaces of amorphous solid water, vapor-deposited and produced from photolysis of a CH_4/O_2 solid mixture2011

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

      Astrophys. J. Lett

      Volume: 738 Pages: 1, L15(5)

    • DOI

      DOI:10.1088/2041-8205/738/1/L15

    • Peer Reviewed
  • [Journal Article] 星間分子雲における二酸化炭素生成に関する実験的研究2011

    • Author(s)
      大場康弘, 渡部直樹, 香内晃, 羽馬哲也, ピロネロ バレリオ
    • Journal Title

      地球化学

      Volume: 45 Pages: 213-226

    • URL

      URL:http://ci.nii.ac.jp/vol_issue/nels/AN00141280/ISS0000477010_ja.html

    • Peer Reviewed
  • [Journal Article] Formation of carbonic acid (H_2CO_3) by surface reactions of non-energetic OH radicals with CO molecules at low temperatures2010

    • Author(s)
      Y.Oba, N.Watanabe, A.Kouchi, T.Hama, V.Pirronello
    • Journal Title

      Astrophys. J

      Volume: 722 Pages: 1598-1606

    • DOI

      DOI:10.1088/0004-637X/722/2/1598

    • Peer Reviewed
  • [Presentation] Formation of H2O Ice on Cold Interstellar Grains: Reaction Kinetics and the Structure of Ice2013

    • Author(s)
      Y. Oba4
    • Organizer
      Workshop on Ice and Water Films
    • Place of Presentation
      Seoul National University, (South Korea), Invited
    • Year and Date
      2013-05-07
  • [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, Hawaii(USA), Invited
    • Year and Date
      2013-02-27
  • [Presentation] Development of an ultrahigh vacuum low temperature transmission electron microscope for in situ observation of ice2013

    • Author(s)
      A. Kouchi
    • Organizer
      First Workshop on Experimental Laboratory Astrophysics
    • Place of Presentation
      Sheraton Kauai, Hawaii(USA)
    • Year and Date
      2013-02-26
  • [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, Hawaii(USA)
    • Year and Date
      2013-02-26
  • [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, Hawaii(USA)
    • Year and Date
      2013-02-26
  • [Presentation] 氷の構造・電子状態解析のための極低温超高真空透過型電子顕微鏡の開発2012

    • Author(s)
      香内晃
    • Organizer
      低温科学研究所萌芽研究「氷の物理と化学研究の新展開」共同研究集会「H_2Oを科学する・2012」
    • Place of Presentation
      北海道大学
    • Year and Date
      2012-12-07
  • [Remarks]

    • URL

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

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Published: 2014-08-29  

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