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

Citation
E. Caurier et al., Shell-model calculations of stellar weak interaction rates. I. Gamow-Teller distributions and spectra of nuclei in the mass range A=45-65, NUCL PHYS A, 653(4), 1999, pp. 439-452
Citations number
34
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
NUCLEAR PHYSICS A
ISSN journal
0375-9474 → ACNP
Volume
653
Issue
4
Year of publication
1999
Pages
439 - 452
Database
ISI
SICI code
0375-9474(19990719)653:4<439:SCOSWI>2.0.ZU;2-U
Abstract
Electron capture and beta-decay rates on nuclei in the mass range A = 45-65 play an important role in many astrophysical environments. The determinati on of these rates by large-scale shell-model calculations is desirable, but it requires to reproduce the Gamow-Teller strength distributions and spect ra of the pf shell nuclei. We show in this paper that large-scale shell-mod el calculations, employing a slightly monopole-corrected version of the wel l-known KB3 interaction, fulfill these necessary requirements. In particula r, 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.