Browsing by Author "Sharpey-Schafer J.F."
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Item First observation of rotational bands in the nucleus 231U(Springer, 2024) Roux D.G.; Lawrie E.A.; Kheswa B.V.; Khumalo N.A; Noncolela S.P.; Ndayishimye J.; Sharpey-Schafer J.F.This work reports the first rotational bands observed in the neutron-deficient nucleus 231U. Excited states were populated in the 232Th(α,5n) reaction at a beam energy of 52 mev. Coincident decay γ-rays were measured with the high-purity germanium detectors of the afrodite spectrometer array, in conjunction with a recoil detector to discriminate against the fission background. The bands are interpreted as the ground-state band ν[633]5/2+, yrast band ν[752]5/2-, and an excited band ν[631]3/2+. Configuration assignments are supported by Cranked Shell Model and B(M1)/B(E2) calculations. The excitation energy of the ν[752]5/2- bandhead is suggested to be 113.0 kev. © The Author(s) 2024.