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Delayed crossing in the pi h_{9/2} 1/2-[541] band of 173 Lu |
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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 |
| Affiliation: | (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) Istituto Nazionale di Fisica Nucleare, Dipartimento di Fisica dell!["rsquo"]("/content/ju5lbwh3em7bpk9b/xlarge8217.gif") Universitá, 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 |
| Abstract: | High-spin states in the odd-proton nucleus 173Lu have been populated in a 170Er(7Li,4n) reaction and the emitted  -radiation was detected with the GASP array. The favoured and unfavoured sequences of the ![$pi 1/2^- [541]$](/content/ju5lbwh3em7bpk9b/10050_2003_Article_10068_TeX2GIFEqu3.gif) band have been considerably extended. The favoured sequence does not show any indication of a band crossing up to a rotational frequency of  0.45 MeV. This is the largest crossing frequency ever observed for 1/2- [541] bands of odd-proton nuclei with  and  . Previous Cranked Shell Model (CSM) calculations underestimate the crossing frequency by 100 keV.Received: 19 May 2003, Published online: 11 November 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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