First identification of rotational band structures in Re-166(75)91

Li, H.; Doncel, M.; Patial, M.; Cederwall, B.; Back, T.; Jakobsson, U.; Auranen, K.; Boenig, S.; Drummond, M.; Grahn, T.; Greenlees, P.; Herzan, A.; Joss, D.; Julin, R.; Juutinen, S.; Konki, J.; Kroell, T.; Leino, M.; McPeake, C.; O'Donnell, D.; Page, R.; Pakarinen, J.; Partanen, J.; Peura, P.; Rahkila, P.; Ruotsalainen, P.; Sandzelius, M.; Saren, J.; Saygi, BAHADIR; Scholey, C.; Sorri, J.; Stolze, S.; Taylor, M.; Thornthwaite, A.; Uusitalo, J.; Xiao, Z.

doi:10.1103/physrevc.92.014310

First identification of rotational band structures in Re-166(75)91

Atıf İçin Kopyala

Li H. J., Doncel M., Patial M., Cederwall B., Back T., Jakobsson U., ...Daha Fazla

PHYSICAL REVIEW C, cilt.92, sa.1, 2015 (SCI-Expanded)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 92 Sayı: 1
Basım Tarihi: 2015
Doi Numarası: 10.1103/physrevc.92.014310
Dergi Adı: PHYSICAL REVIEW C
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED)
Ankara Üniversitesi Adresli: Hayır

Özet

Excited states in the odd-odd, highly neutron-deficient nucleus Re-166 have been investigated via the Mo-92(Kr-78, 3p1n)Re-166 reaction. Prompt gamma rays were detected by the JUROGAM II. gamma-ray spectrometer, and the recoiling fusion-evaporation products were separated by the recoil ion transport unit (RITU) gas-filled recoil separator and implanted into the Gamma Recoil Electron Alpha Tagging spectrometer located at the RITU focal plane. The tagging and coincidence techniques were applied to identify the gamma-ray transitions in Re-166, revealing two collective, strongly coupled rotational structures, for the first time. The more strongly populated band structure is assigned to the pi h(11/2)[514]9/2(-) circle times vi(13/2)[660]1/2(+) Nilsson configuration, while the weaker structure is assigned to be built on a two-quasiparticle state of mixed pi h(11/2)[514]9/2(-) circle times v[h(9/2)f(7/2)]3/2(-) character. The configuration assignments are based on the electromagnetic characteristics and rotational properties, in comparison with predictions from total Routhian surface and particle-rotor model calculations.