Spectroscopy of the N = Z-2 nucleus Cr-46 and mirror energy differences


Garrett P. E., Lenzi S. M., Algin E., Appelbe D., Bauer R. W., Becker J. A., ...Daha Fazla

PHYSICAL REVIEW C, cilt.75, sa.1, 2007 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 75 Sayı: 1
  • Basım Tarihi: 2007
  • Doi Numarası: 10.1103/physrevc.75.014307
  • Dergi Adı: PHYSICAL REVIEW C
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Eskişehir Osmangazi Üniversitesi Adresli: Hayır

Özet

Excited states in Cr-46 were sought using the C-12(Ar-36,2n) reaction. Gamma rays were detected with the Gammasphere array, and the Z value of the reaction products was determined with an ionization chamber located at the focal plane of the Fragment Mass Analyzer. In addition to the ground-state band observed up to I-pi=10(+) (tentatively 12(+)), five states are proposed to belong to the 3(-) band. The mirror energy differences with the analog states in Ti-46 present a pronounced staggering effect between the odd and even spin members that is reproduced well by shell-model calculations incorporating the different Coulomb contributions, monopole, multipole, and single-particle effects together with an isospin-nonconserving interaction that accounts for the so-called J=2 anomaly. Dramatically different E1 decay patterns for members of the 3(-) band between the Cr-46 and Ti-46 mirrors are also observed.