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Pseudo-spin band in the odd-odd nucleus 172Lu |
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| Authors: | Ts Venkova R M Lieder W Gast D Bazzacco G de Angelis E Podsvirova H M Jäger L Mihailescu R Menegazzo S Lunardi C Rossi Alvarez C Ur T Martinez M Axiotis D Napoli W Urban T Rzaca-Urban S Frauendorf |
| Institution: | (1) Institut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, Germany;(2) Institute of Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, BG-1784 Sofia, Bulgaria;(3) Dipartimento di Fisica dell Università and Istituto Nazionale di Fisica Nucleare, Sezione di Padova, I-35131 Padova, Italy;(4) Laboratori Nazionali di Legnaro, Istituto Nazionale di Fisica Nucleare, I-35020 Legnaro, Italy;(5) Institute of Experimental Physics, University of Warsaw, PL-00-681 Warszawa, Poland;(6) Department of Physics, University of Notre Dame, Notre Dame, IN, USA |
| Abstract: | High-spin states in the odd-odd nucleus 172Lu have been populated in a 170Er(7Li, 5n) reaction and the emitted
-radiation was detected with the GASP array. Two sequences of a new identical band have been observed with the transition energies in the favoured and unfavoured sequences being identical within
keV at low spins and
keV at high spins over the whole observed spin range. Aninterpretation as a pseudo-spin singlet band of
![$\pi 1/2^- 541] \otimes \nu 1/2^- \widetilde{420}]$](/content/kv7yp9pdv0vrabwc/10050_2003_Article_10024_TeX2GIFEqu4.gif)
configuration is proposed. It represents the best example of a pseudo-spin singlet band in normal deformed nuclei known until now.Received: 19 February 2003, Revised: 27 March 2003, Published online: 12 August 2003PACS:
21.10.-k Properties of nuclei; nuclear energy levels - 21.10.Re Collective levels - 23.20.Lv
transitions and level energies - 27.70.+q
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