| タイトル | Cosmogenic nuclides in core samples of the Chico L6 chondrite - Evidence for irradiation under high shielding |
| 著者（英） | Garrison, D. H.; Dezfouly-Arjomandy, B.; Herzog, G. F.; Bogard, D. D.; Klein, J.; Vogt, S.; Fink, D.; Albrecht, A. A.; Middleton, R. |
| 著者所属（英） | NASA Johnson Space Center |
| 発行日 | 1992-09-01 |
| 言語 | eng |
| 内容記述 | Results are presented from an analysis of core samples obtained from different depths of the Chico (New Mexico) L6 chondrite for various cosmogenic nuclides (Be-10, Al-26, and stable isotopes of He, Ne, and Ar). The relationships between the measured abundances of cosmogenic nuclides and cosmogenic Ne-22/Ne-21 ratio were compared with predictions of recent semiempirical models of Graf et al. (1990) and Reedy (1991), and it was found that both models closely reproduce the observed trends and absolute values of the data obtained. Noble gas data indicate that Chico experienced shielding similar to that of Jilin and greater than those of the Knyahinya or the Keyes chondrites. The exposure history for Chico is discussed. |
| NASA分類 | LUNAR AND PLANETARY EXPLORATION |
| レポートNO | 93A13961 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/322363 |
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