beta decay of Ar-49,Ar-50
Artikel i vetenskaplig tidskrift, 2003

Information on gross beta-decay properties of neutron-rich noble gas isotopes Ar-49,Ar-50 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 Ar-49 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 Ca-48/Ca-46 isotopic anomaly discovered in inclusions from the Allende meteorite.

S-44

NEUTRON-RICH NUCLEI

CA-48/CA-46 ABUNDANCE RATIO

ISOTOPIC ANOMALIES

DEFORMED N=28 REGION

ALLENDE METEORITE

MODEL

STRENGTH FUNCTIONS

Författare

L. Weissman

U. Bergmann

J. Cederkall

L. M. Fraile

S. Franchoo

H. Fynbo

H. Gausemel

H. B. Jeppesen

U. Koster

K. L. Kratz

B. Pfeiffer

K. Van del Vel

Physical Review C - Nuclear Physics

0556-2813 (ISSN) 1089-490X (eISSN)

Vol. 67

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