@article{oai:nipr.repo.nii.ac.jp:00001101,
 author = {Takaoka, Nobuo and Nagao, Keisuke},
 journal = {Memoirs of National Institute of Polar Research. Special issue},
 month = {Dec},
 note = {P(論文), Results are summarized of mass spectrometrical measurements of rare gases in the Yamato-74191 (L3) chondrite. The rare gas compositions in the Yamato-75258 amphoterite (type 6) were measured. Spallogenic gases dominate in He and Ne. Cosmic-ray irradiation and gas retention ages were tentatively calculated to be 12.4Ma and 30Ga, respectively. The concentration of trapped ^<132>(Xe) agrees with that inferred from the petrologic type.},
 pages = {210--218},
 title = {Neutron Capture Effects in Yamato-74191 and Rare Gas Composition in Yamato-75258},
 volume = {17},
 year = {1980}
}