Shell-model calculations of stellar weak interaction rates.: I.: Gamow-Teller distributions and spectra of nuclei in the mass range A=45-65

被引:233
作者
Caurier, E
Langanke, K
Martínez-Pinedo, G
Nowacki, F
机构
[1] Univ Strasbourg, Inst Rech Subatom, IN2P3, CNRS, F-67037 Strasbourg 2, France
[2] Aarhus Univ, Inst Phys & Astron, DK-8000 Aarhus C, Denmark
[3] Lab Phys Theor Strasbourg, F-67084 Strasbourg, France
关键词
D O I
10.1016/S0375-9474(99)00240-7
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
Electron capture and beta-decay rates on nuclei in the mass range A = 45-65 play an important role in many astrophysical environments. The determination of these rates by large-scale shell-model calculations is desirable, but it requires to reproduce the Gamow-Teller strength distributions and spectra of the pf shell nuclei. We show in this paper that large-scale shell-model calculations, employing a slightly monopole-corrected version of the well-known KB3 interaction, fulfill these necessary requirements. In particular, our calculations reproduce the experimentally available GT(+) and GT(-) strength distributions and the nuclear halflives, and describe the nuclear spectra appropriately. (C) 1999 Elsevier Science B.V, All rights reserved.
引用
收藏
页码:439 / 452
页数:14
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