Beta decay half-lives of neutron rich Ti-Co isotopes around N=40

Citation
O. Sorlin et al., Beta decay half-lives of neutron rich Ti-Co isotopes around N=40, NUCL PHYS A, 660(1), 1999, pp. 3-19
Citations number
34
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
NUCLEAR PHYSICS A
ISSN journal
0375-9474 → ACNP
Volume
660
Issue
1
Year of publication
1999
Pages
3 - 19
Database
ISI
SICI code
0375-9474(19991115)660:1<3:BDHONR>2.0.ZU;2-0
Abstract
The neutron-rich Ti57-59, V59-62, Cr61-64, Mn63-66, Fe65-68, Co67-70 have b een produced at GANIL via interactions of a 60.4 MeV/u (KR34+)-K-86 With a Ni-58 target. They have been separated by the doubly achromatic spectromete r LISE3. Beta-decay half-lives have been determined for all produced nuclei , and subsequent gamma-rays have been observed for the most efficiently pro duced nuclei. The measured half-lives of vanadium and chromium isotopes are compared to QRPA calculations using ground states deformations from the FR DM or ETFSI models. In an astrophysical context, the short half-lives of Ti -58 and Cr-64 indicate that these nuclei are potential r-process progenitor s, after beta-decay, of Fe-58 and Ni-64 in certain inclusions of meteorites . (C) 1999 Published by Elsevier Science B.V. All rights reserved.