High-spin spectroscopy of 139Ce.

Authors :: Kaim, S.
Petrache, C. M.
Gargano, A.
Itaco, N.
Zerrouki, T.
Leguillon, R.
Astier, A.
Deloncle, I.
Konstantinopoulos, T.
Régis, J. M.
Wilmsen, D.
Melon, B.
Nannini, A.
Ducoin, C.
Guinet, D.
Bhattacharjee, T.
Source :: Physical Review C: Nuclear Physics. Feb2015, Vol. 91 Issue 2, p1-8. 8p.
Publication Year :: 2015
Abstract: High-spin states in 139Ce have been populated using the 130Te(14C,5n) reaction. The level scheme has been extended to higher spins, including a new band of dipole transitions. The parity of several states has been changed from negative to positive, mainly based on the comparison with the level structure of the core nucleus 140Ce and the results of a realistic shell-model calculation. The dipole band is interpreted as a magnetic rotation band with πh11/2² ⊗ νh-111/2 configuration built on small deformation axial shape with (ɛ2 = 0.12,γ = 0°). [ABSTRACT FROM AUTHOR]