Rare Gas Studies of Yamato-7301(j), -7304(m) and -7305(k)

• Nobuo, Takaoka

• Keisuke, Nagao

抄録

type:P(論文)

Yamato-7301 (H4 chondrite) and Yamato-7304 and -7305 (both L5 chondrites) were investigated for concentrations and isotopic compositions of rare gases. From the data of isotopic analyses of rare gases, cosmic-ray exposure ages on cosmogenic ^3(He), ^<21>(Ne) and ^<38>(Ar) and gas-retention ages on radiogenic ^4(He) and ^<40>(Ar) were calculated as follows : [table] Partial loss of helium was suggested for three samples. There were definitely observed ^<129>Xe-excesses and systematic enrichment in the light isotopes of xenon in all three meteorites. Isotopic anomalies were observed in the heavy isotopes of xenon in Yamato-7304 and the excess pattern resembles the fission yield pattern of ^<244>(Pu).

収録刊行物

• Memoirs of National Institute of Polar Research. Special issue

  Memoirs of National Institute of Polar Research. Special issue 8 198-208, 1978-02

詳細情報

• CRID: 1050565162706228096
• NII論文ID: 120005502224
• NII書誌ID: AA00733561
• Web Site: http://id.nii.ac.jp/1291/00000888/
• 本文言語コード: en
• 資料種別: departmental bulletin paper
• データソース種別:
  • IRDB
  • CiNii Articles