16+ Spin-Gap Isomer in 96Cd

Forskningsoutput: TidskriftsbidragLetter

Abstract

A beta-decaying high-spin isomer in Cd-96, with a half-life T-1/2 = 0.29(-0.10)(+0.11) s, has been established in a stopped beam rare isotope spectroscopic investigations at GSI (RISING) experiment. The nuclei were produced using the fragmentation of a primary beam of Xe-124 on a Be-9 target. From the half-life and the observed gamma decays in the daughter nucleus, Ag-96, we conclude that the beta-decaying state is the long predicted 16(+) "spin-gap'' isomer. Shell-model calculations, using the Gross-Frenkel interaction and the pi nu(p(1/2,)g(9/2)) model space, show that the isoscalar component of the neutron-proton interaction is essential to explain the origin of the isomer. Core excitations across the N = Z = 50 gaps and the Gamow-Teller strength, Bd(GT) distributions have been studied via large-scale shell-model calculations using the pi nu(g, d, s) model space to compare with the experimental B(GT) value obtained from the half-life of the isomer.

Detaljer

Författare
  • B. S. Nara Singh
  • Z. Liu
  • R. Wadsworth
  • H. Grawe
  • T. S. Brock
  • P. Boutachkov
  • N. Braun
  • A. Blazhev
  • M. Gorska
  • S. Pietri
  • C. Domingo-Pardo
  • S. J. Steer
  • A. Atac
  • L. Bettermann
  • L. Caceres
  • K. Eppinger
  • T. Engert
  • T. Faestermann
  • F. Farinon
  • F. Finke
  • K. Geibel
  • J. Gerl
  • R. Gernhaeuser
  • N. Goel
  • A. Gottardo
  • J. Grebosz
  • C. Hinke
  • Robert Hoischen
  • G. Ilie
  • H. Iwasaki
  • J. Jolie
  • A. Kaskas
  • I. Kojouharov
  • R. Kruecken
  • N. Kurz
  • E. Merchan
  • C. Nociforo
  • J. Nyberg
  • M. Pfuetzner
  • A. Prochazka
  • Zs. Podolyak
  • P. H. Regan
  • P. Reiter
  • S. Rinta-Antila
  • C. Scholl
  • H. Schaffner
  • P. -A. Soderstrom
  • N. Warr
  • H. Weick
  • H. -J. Wollersheim
  • P. J. Woods
  • F. Nowacki
  • K. Sieja
Enheter & grupper
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Subatomär fysik
Originalspråkengelska
Artikelnummer172502
TidskriftPhysical Review Letters
Volym107
Utgåva nummer17
StatusPublished - 2011
PublikationskategoriForskning
Peer review utfördJa

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