Separation of carrier phase of primordial noble gas component trapped in primitive chondrites with ultra-high centrifugal force

• Project/Area Number: 21740391
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Geochemistry/Astrochemistry
• Research Institution: Japan Atomic Energy Agency
• Principal Investigator: OSAWA Takahito 独立行政法人日本原子力研究開発機構, 量子ビーム応用研究部門, 研究員 (70414589)
• Project Period (FY): 2009 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2011: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2010: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2009: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
• Keywords: Q成分 / phase Q / 惑星起源 / 進化 / 炭素質コンドライト / 表面 / 界面物性 / 遠心分離 / 惑星起源・進化 / 表面・界面物性

Research Abstract

A primitive carbonaceous chondrite was treated by hydrochloric acid and hydro fluoric acid and a carbonaceous residue was obtained. The residue was separated with an ultra-high centrifugation system and two fractions were obtained. Noble gas isotopic measurement was conducted for the fractions and extremely high concentrations of noble gases were detected for the heavier fraction.

Research Products

• [Journal Article] Kr and Xe Ions Implanted on the Surfaces of Mo, Hf, Ta, W, Re, Au and Platinum Group Elements (2012)
  • Author(s): Osawa T.
  • Journal Title: Nuclear Instruments and Methods in Physics Research B Volume: 274 Pages: 93-99
• [Journal Article] Irradiation History of Itokawa Regolith Material Deduced from Noble Gases in the Hayabusa Samples (2011)
  • Author(s): K.Nagao, A.Tsuchiyama
  • Journal Title: Science Volume: 333 Issue: 6046 Pages: 1128-1131
  • DOI: 10.1126/science.1207785
  • Peer Reviewed
• [Journal Article] Mercury and gold concentrations of highly polluted environmental samples determined using prompt gamma-ray analysis and instrument neutron activation analysis (2011)
  • Author(s): Osawa T., Hatsukawa Y., Appel P.W.U., Matsue H.
  • Journal Title: Nuclear Instruments and Methods in Physics Research B Volume: 269 Pages: 717-720
  • Peer Reviewed
• [Journal Article] Interior textures, chemical compositions, and noble gas signatures of Antarctic cosmic spherules : Possible sources of spherules with long exposure ages (2011)
  • Author(s): Osawa T., Yamamoto Y., Noguchi T., Iose A., Nagao K.
  • Journal Title: Meteoritics & Planetary Science Volume: 45 Pages: 1320-1339
  • Peer Reviewed
• [Journal Article] Quantitative estimation methods for concentrations and layer thicknesses of elements using edge-lump ratios of X-ray absorption spectra (2010)
  • Author(s): Osawa T.
  • Journal Title: Anal.Sci. 26 Pages: 281-284
  • Peer Reviewed
• [Journal Article] Iridium concentration and noble gas composition of Cretaceous-Tertiary boundary clay from Stevns Klint, Denmark (2009)
  • Author(s): Osawa T., Hatsukawa Y., Nagao K., Koizumi M., Oshima M., Toh Y., Kimura A., Furutaka K.
  • Journal Title: Geochem.J. 43 Pages: 415-422
  • Peer Reviewed
• [Journal Article] Argon Retentivity of Carbonaceous Materials : Feasibility of Kerogen as a Carrier Phase of Q-noble Gases (2009)
  • Author(s): Osawa T., Hirao N., Takeda N., Baba Y.
  • Journal Title: Earth, Planets and Space 61 Pages: 1003-1011
  • Peer Reviewed
• [Presentation] 超遠心力場における固体状態の錫同位体分別 (2012)
  • Author(s): 大澤崇人
  • Organizer: 春季第59回応用物理学関係連合講演会
  • Place of Presentation: 早稲田大学(招待講演)
  • Year and Date: 2012-03-15
• [Presentation] Separation of noble gas carrier in primitive meteorites using ultra centrifugation (2011)
  • Author(s): Osawa Takahito
  • Organizer: 2011 Japan-Korea Joint Meeting of Isotope-Ratio Mass Spectrometry, The Mass Spectrometry Society of Japan
  • Place of Presentation: Busan South Lorea
  • Year and Date: 2011-11-24
• [Presentation] Separation of noble gas carrier in primitive meteorites using ultra centrifugation (2011)
  • Author(s): 大澤崇人
  • Organizer: 2011 Japan-Korea Joint Meeting of Isotope-Ratio Mass Spectrometry, The Mass Spectrometry Society of Japan
  • Place of Presentation: 釜山・韓国
  • Year and Date: 2011-11-24
• [Presentation] SEPは本当に存在しないのか (2010)
  • Author(s): 大澤崇人
  • Organizer: 質量分析学会同位体比部会
  • Place of Presentation: 別府山水館
  • Year and Date: 2010-11-19
• [Presentation] Preliminary Research for Iridium in Cretaceous-Tertiary Boundary Clay Using Multi Gamma Ray Detection (2009)
  • Author(s): Osawa T., Hatsukawa Y., Nagao K., Koizumi M., Oshima M., Toh Y., Kimura A., Furutaka K.
  • Organizer: Asia-Pacific Symposium on Radiochemistry
  • Place of Presentation: Napa
  • Year and Date: 2009-12-01
• [Book] Solar wind noble gases in micrometeorites. In Exploring the Solar Wind Ed. by Marian Lazar (2012)
  • Author(s): Osawa Takahito
  • Publisher: InTech
• [Book] Exploring the Solar Wind (2012)
  • Author(s): 大澤崇人
  • Total Pages: 20
  • Publisher: InTech, Croatia