Low-lying excited states in the neutron-deficient isotopes Os-163 and Os-165


Drummond M. C. , Joss D. T. , Page R. D. , Simpson J., O'Donnell D., Andgren K., ...More

PHYSICAL REVIEW C, vol.87, no.5, 2013 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 87 Issue: 5
  • Publication Date: 2013
  • Doi Number: 10.1103/physrevc.87.054309
  • Title of Journal : PHYSICAL REVIEW C

Abstract

Excited states in the neutron-deficient isotopes Os-163 and Os-165 were identified using the JUROGAM and GREAT spectrometers in conjunction with the RITU gas-filled separator. The Os-163 and Os-165 nuclei were populated via the Cd-106(Ni-60,3n) and Mo-92(Kr-78,2p3n) reactions at bombarding energies of 270 MeV and 357 MeV, respectively. Gamma-ray emissions from these nuclei have been established unambiguously using the recoil-decay tagging technique and a coincidence analysis has allowed level schemes to be established. These results suggest that the yrast states are based upon negative-parity configurations originating from the f(7/2) and h(9/2) orbitals.