Measurement of weak rates for stellar evolution via the (t,3He)reaction.

被引：1

作者：

Zegers, R. G. T. ^{[1
]}

机构：

[1] Michigan State Univ, Natl Supercond Cyclotron Lab, Dept Phys & Astron, E Lansing, MI 48824 USA

[2] Michigan State Univ, Joint Inst Nucl Astrophys, E Lansing, MI 48824 USA

来源：

NUCLEAR PHYSICS A | 2007年 / 787卷

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/j.nuclphysa.2006.12.052

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The (t,He-3) charge-exchange reaction has been developed as a tool to extract Gamow-Teller strengths on nuclei of importance for stellar evolution. A secondary triton beam of 115 MeV/nucleon is used, either produced from a primary a beam, or, since recently, from a primary O-16 beam. Here, the (t,He-3) reaction is used to study the Garnow-Teller strength distribution in Co-58 via the Ni-58 (t,He-3) reaction. The experimental results are compared with calculations in large-scale shell models using the kb3g and gxpfl interactions, as well as existing data from Ni-58(n,p) and Ni-58(d,He-2) experiments. The differences between the data and theoretical models are studied in terms of electron-capture rates in the pre-collapse stages of core-collapse supernovae.

引用

页码：329C / 336C

页数：8

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