吉林陨石稀有气体的分布特征及其热历史的初步探讨

吉林陨石的宇成和放射成因稀有气体存在大幅度的变化.宇成3He、20, 21, 22Ne和38Ar_c之间彼此近似线性相关, 放射成因4He和40Ar之间近似线性相关.放射成因4He、40Ar与作为陨星深度标尺的宇成60Co间近似线性相关, 但与作为吉林陨石母体深度标尺的21Ne之间不存在线性相关.上述事实表明:4He和40Ar在吉林陨石中的分布是不均匀的, 在吉林母体中的分布是不规则的, 而在吉林流星中, 由表面至中心呈现递增的倾向.我们试图用吉林陨石母体与小行星间的碰撞效应解释用4He和40Ar的上述独特分布特征. 

Characteristic of the Distribution of Rare Gases and Preliminary Discussion of Thermal History in the Jilin

The concentration of cosmogenic and radiogenic rare gases in the Jilin present great variation. There are approximate linear correlation between cosmogenic 3He, 20, 21, 22Ne and 38Ar, and between radiogenic 4He and 40Ar. There are approximate linear correlation between radiogenic 4He, 40Ar and cosmogenic 60Co as depth of the jilin meteorite, but there not linear correlation between radiogenic 4He, 40Ar and cosmogenic 21Ne as depth scale of the Jilin parent body. These results have been shown that the distribution of concentration of 4He and 40Ar in the Jilin meteorite is inhomogeneous, and it is irregular in the Jilin parent body, and that the concentration of 4He and 40Ar increase toward from surfase to center in the Jilin meteoroid. We try to explanation unique characteristic of the distribution of 4He and 40Ar concentration in the Jilin with impact effects between Jilin parent body and asteroids.