Eu isotopic analyses of SiC grains from the Murchison Meteorite

被引：0
作者：
Terada, K. [1 ]
Yoshida, T. [2 ]
Iwamoto, N. [3 ]
Aoki, W. [4 ]
Williams, I. S. [5 ]
机构：
[1] Hiroshima Univ, Dept Earth & Planetary Syst Sci, Hiroshima 730, Japan
[2] Tohoku Univ, Astron Inst, Sendai, Japan
[3] Japan Atom Energy Agcy, Tokai, Japan
[4] Natl Astron Observ, Tokyo, Japan
[5] Australian Natl Univ, Res Sch Earth Sci, Canberra, Australia
来源：
ORIGIN OF MATTER AND EVOLUTION OF GALAXIES | 2006年 / 847卷
基金：
日本学术振兴会;
关键词：
presolar grains; mass spectrometry; AGB star; s-process; neutron capture process;
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We report Eu isotopic analyses of single SiC grains from primitive meteorites using the Sensitive High Resolution Ion Microprobe. The results are compared with Eu isotopic ratios predicted from the recently determined Sm-151(n, gamma) cross sections and the thermally pulsed s-process model of AGB stars. The observed Eu isotopic compositions of SiC grains place constraints on s-process conditions such as the temperature and neutron densities in AGB stars.
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页码：324 / +
页数：3
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