β Decay of 49,50Ar

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Abstract

Information on gross β-decay properties of neutron-rich noble gas isotopes 49,50Ar was obtained at the PSB-ISOLDE facility at CERN using isobaric selectivity achieved by the combination of a plasma ion source with a cooled transfer line and subsequent mass separation. A doubly charged beam was used in the case of 49Ar to suppress the corresponding multicharged background from heavier noble gas fission products. The comparison of the obtained data with results of quasiparticle random-phase approximation calculations indicates that the N = 28 shell is not disturbed significantly for neutron-rich Ar nuclei. The obtained results are useful for better understanding of the origin of the 48Ca/46Ca isotopic anomaly discovered in inclusions from the Allende meteorite.

Detaljer

Författare
  • L. Weissman
  • U. Bergmann
  • J. Cederkall
  • L. M. Fraile
  • S. Franchoo
  • H. Fynbo
  • H. Gausemel
  • H. Jeppesen
  • U. Köster
  • K. L. Kratz
  • T. Nilsson
  • B. Pfeiffer
  • K. Van del Vel
Externa organisationer
  • Michigan State University
  • Complutense University of Madrid
  • Aarhus University
  • University of Oslo
  • Catholic University of Leuven
  • University of Mainz
  • CERN
Originalspråkengelska
Sidor (från-till)543141-543146
Antal sidor6
TidskriftPhysical Review C - Nuclear Physics
Volym67
Utgåva nummer5
StatusPublished - 2003 maj 1
PublikationskategoriForskning
Peer review utfördJa
Externt publiceradJa