Collective rotation of an oblate nucleus at very high spin

Date
2019
Author
Frauendorf, S.
Lv, B. F.
Astier, A.
ERTOPRAK, Ayşegül
Wang, K. L.
Greenlees, P. T.
Badran, H.
Cox, D. M.
Grahn, T.
Julin, R.
Juutinen, S.
Konki, J.
Pakarinen, J.
Papadakis, P.
Partanen, J.
Sandzelius, M.
Saren, J.
Scholey, C.
Sorri, J.
Stolze, S.
Uusitalo, J.
Cederwall, B.
Liu, H.
Kuti, I
Timar, J.
Tucholski, A.
Dupont, E.
Rahkila, P.
Aktaş, Özge
Guo, S.
Liu, M. L.
Zhou, X. H.
Srebrny, J.
Andreoiu, C.
Petrache, C.
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Abstract
A sequence of nine almost equidistant quadrupole transitions is observed in Nd-137. The sequence represents an extremely regular rotational band that extends to a spin of about 75/2 and an excitation energy of approximate to 4.5 MeV above yrast. Cranked mean-field calculations of the Nilsson-Strutinsky type suggest an oblate shape for the band. They reproduce the observed I(I +1) dependence of the rotational energy whereas predicting a pronounced decrease in the deformation, which is the hallmark of antimagnetic rotation.
URI
http://hdl.handle.net/20.500.12627/143129
https://journals.aps.org/prc/pdf/10.1103/PhysRevC.99.041301
https://doi.org/10.1103/physrevc.99.041301
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