Spectroscopy of the neutron-deficient nucleus Os-167(91)

O'Donnell, D.; Grahn, T.; Joss, D.; Simpson, J.; Scholey, C.; Andgren, K.; Bianco, L.; Cederwall, B.; Cullen, D.; Dewald, A.; Ganioglu, Ela; Hornillos, M.; Greenlees, P.; Hadinia, B.; Iwasaki, H.; Jakobsson, U.; Jolie, J.; Jones, P.; Judson, D.; Julin, R.; Juutinen, S.; Ketelhut, S.; Labiche, M.; Leino, M.; Lumley, N.; Mason, P.; Moeller, O.; Nieminen, P.; Nyman, M.; Page, R.; Pakarinen, J.; Paul, E.; Petri, M.; Petts, A.; Peura, P.; Pietralla, N.; Pissulla, Th.; Rahkila, P.; Ruotsalainen, P.; Sandzelius, M.; Sapple, P.; Saren, J.; Sorri, J.; Thomson, J.; Uusitalo, J.; Watkins, H.

doi:10.1103/physrevc.79.064309

Spectroscopy of the neutron-deficient nucleus Os-167(91)

Atıf İçin Kopyala

O'Donnell D., Grahn T., Joss D. T., Simpson J., Scholey C., Andgren K., ...Daha Fazla

PHYSICAL REVIEW C, cilt.79, sa.6, 2009 (SCI-Expanded)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 79 Sayı: 6
Basım Tarihi: 2009
Doi Numarası: 10.1103/physrevc.79.064309
Dergi Adı: PHYSICAL REVIEW C
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
İstanbul Üniversitesi Adresli: Evet

Özet

Excited states of the nucleus Os-167 have been populated by the reaction Mo-92(Kr-78,2pn). The JUROGAM gamma-ray detector array has been used in conjunction with the RITU gas-filled separator and the GREAT spectrometer to observe prompt gamma rays in coincidence with recoiling fusion-evaporation residues and their subsequent decay by alpha particle emission. By correlating prompt gamma radiation with the characteristic alpha radioactivity of Os-167, it has been possible to extend the level scheme for this nucleus significantly. In particular, an extension of the yrast band and four previously unobserved bands are reported. In addition, the recoil distance Doppler-shift method was used to determine a lifetime of tau=20(4) ps for The I-pi=17/2(+) state in Os-167. Hence, the level of collectivity and magnitude of deformation of the low spin yrast band of this nucleus is established.