CPL - Chalmers Publication Library
| Utbildning | Forskning | Styrkeområden | Om Chalmers | In English In English Ej inloggad.

beta decay of Ar-49,Ar-50

L. Weissman ; U. Bergmann ; J. Cederkall ; L. M. Fraile ; S. Franchoo ; H. Fynbo ; H. Gausemel ; H. Jeppesen ; U. Koster ; K. L. Kratz ; Thomas Nilsson (Institutionen för experimentell fysik, Subatomär fysik ; Extern) ; B. Pfeiffer ; K. Van del Vel
Physical Review C (0556-2813). Vol. 67 (2003), 5,
[Artikel, refereegranskad vetenskaplig]

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.

Nyckelord: NEUTRON-RICH NUCLEI, CA-48/CA-46 ABUNDANCE RATIO, DEFORMED N=28 REGION, ISOTOPIC ANOMALIES, STRENGTH FUNCTIONS, ALLENDE METEORITE, MODEL, S-44



Denna post skapades 2006-08-28. Senast ändrad 2014-09-02.
CPL Pubid: 11164

 

Institutioner (Chalmers)

Institutionen för experimentell fysik, Subatomär fysik (1900-2005)

Ämnesområden

Lågenergifysik

Chalmers infrastruktur