Delayed crossing in the πh9/2 1/2-[541] band of 173Lu.

Authors :: Venkova, Ts
Lieder, R. M.
Gast, W.
Bazzacco, D.
Angelis, G. de
Podsvirova, E.
Jäger, H. M.
Mihailescu, L.
Menegazzo, R.
Lunardi, S.
Alvarez, C. Rossi
Ur, C.
Martinez, T.
Axiotis, M.
Napoli, D.
Urban, W.
Rz&acedil;ca-Urban, T.
Source :: European Physical Journal A -- Hadrons & Nuclei. Dec2003, Vol. 18 Issue 4, p577-581. 5p.
Publication Year :: 2003
Abstract: High-spin states in the odd-proton nucleus 173Lu have been populated in a 170Er(7Li,4n) reaction and the emitted γ-radiation was detected with the GASP array. The favoured and unfavoured sequences of the π1/2- [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 67 < Z < 77 and 90 < N < 106. Previous Cranked Shell Model (CSM) calculations underestimate the crossing frequency by 100 keV. [ABSTRACT FROM AUTHOR]