Nuclear data for gamma ray astronomy and the cosmochemistry of isotopic anomalies

被引：4

作者：

Coc, A ^{[1
]}

Porquet, MG ^{[1
]}

机构：

[1] CNRS, IN2P3, Ctr Spectrometrie Nucl & Spectrometrie Masse, F-91405 Orsay, France

来源：

TOURS SYMPOSIUM ON NUCLEAR PHYSICS III | 1998年 / 425期

关键词：

D O I：

10.1063/1.55169

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Al-26 nucleus is of prime interest both for gamma ray astronomy (observation of its 1.809 MeV line) and for the cosmochemistry of isotopic anomalies (anomalous Mg-26 abundances in some meteorites). It is thus important to improve the nuclear data involved in Al-26 nucleosynthesis. For instance, we discuss here the modes of Al-26 destruction and in particular its beta-decay through off-equilibrium thermal population of the lowest lying levels. Available nuclear data are used to improve the estimates for this mode of destruction.

引用

页码：457 / 464

页数：8