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 12−[541] 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 67Z77 and 90N106 . Previous Cranked Shell Model (CSM) calculations underestimate the crossing frequency by 100 keV.
Delayed crossing in the pi h_{9/2} 1/2 - [541] band of 173 Lu
LUNARDI, SANTO;
2003
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 12−[541] 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 67Z77 and 90N106 . Previous Cranked Shell Model (CSM) calculations underestimate the crossing frequency by 100 keV.
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