β Decay of ^49,50Ar

Summary, in English

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.

• Author: 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
• Publishing year: 2003-05-01
• Language: English
• Pages: 543141-543146
• Publication/Series: Physical Review C - Nuclear Physics
• Volume: 67
• Issue: 5
• Document type: Journal article
• Publisher: American Physical Society
• Status: Published
• ISBN/ISSN/Other: ISSN: 0556-2813