Phys.Rev. C 98, 044316 (2018)

S.Bhattacharyya, E.H.Wang, A.Navin, M.Rejmund, J.H.Hamilton, A.V.Ramayya, J.K.Hwang, A.Lemasson, A.V.Afanasjev, S.Bhattacharya, J.Ranger, M.Caamano, E.Clement, O.Delaune, F.Farget, G.de France, B.Jacquot, Y.X.Luo, Yu.Ts.Oganessian, J.O.Rasmussen, G.M.Ter-Akopian, S.J.Zhu

Deformed band structures in neutron-rich ^152-158Pm isotopes

NUCLEAR REACTIONS ⁹Be(²³⁸U, F), E=6.2 MeV/nucleon; measured fission fragments, time of flight, Eγ, Iγ, γγ- and (fragment)γ-coin using the VAMOS++ magnetic spectrometer for fragment separation and the EXOGAM segmented Clover array for γ detection at GANIL. ^{152,153,154,155,156,157,158}Pm; deduced high-spin levels, J, π, bands, alignment and staggering plots. ¹⁵¹Pm; measured γ spectrum in coincidence with fission fragments. Systematics of band structures in ^{151,153,155,157}Pm. Comparison with previous experimental values and cranked Hartree-Bogoliubov calculations.

RADIOACTIVITY ²⁵²Cf(SF); measured Eγ, Iγ, γ(θ), high-fold γγ-coin using Gammasphere array with 101 HPGe detectors at LBNL. ^{152,153,154,155,156,157,158}Pm; deduced high-spin levels, bands.

doi: 10.1103/PhysRevC.98.044316