Influence of the low-lying discrete nuclear states on the partition function for stellar electron capture and beta decay rates

Authors
Dimarco, A Dias, H Velasco, FG Losano, L
Citation
A. Dimarco et al., Influence of the low-lying discrete nuclear states on the partition function for stellar electron capture and beta decay rates, INT J MOD E, 9(4), 2000, pp. 319-337
Citations number
42
Categorie Soggetti
Physics
Journal title
INTERNATIONAL JOURNAL OF MODERN PHYSICS E-NUCLEAR PHYSICS
ISSN journal
02183013 → ACNP
Volume
9
Issue
4
Year of publication
2000
Pages
319 - 337
Database
ISI
SICI code
0218-3013(200008)9:4<319:IOTLDN>2.0.ZU;2-V
Abstract
The influence of low-lying discrete states on the partition function for el ectron capture and beta decay rates in stellar conditions is discussed. Cal culations are carried out for Fe-56, Fe-57, Co-59 and Co-60. Experimental d ata and different level densities are used. We show that by using a simple but consistent approximation to calculate the nuclear partition function, i t is possible to modify significantly the electron capture and beta decay r ates.