N=151Pu,Cm and Cf nuclei under rotational stress: Role of higher-order deformations

• Main Authors: S.S. Hota, P. Chowdhury, T.L. Khoo, M.P. Carpenter, R.V.F. Janssens, Y. Qiu, I. Ahmad, J.P. Greene, S.K. Tandel, D. Seweryniak, S. Zhu, P.F. Bertone, C.J. Chiara, A.Y. Deo, N. D'Olympia, S. Gros, C.J. Guess, T. Harrington, D.J. Hartley, G. Henning, C.R. Hoffman, E.G. Jackson, F.G. Kondev, S. Lakshmi, T. Lauritsen, C.J. Lister, E.A. McCutchan, K. Moran, C. Nair, D. Peterson, U. Shirwadkar, I. Stefanescu
• Format: Article
• Language: English
• Published: Elsevier 2014-12-01
• Series: Physics Letters B
• Online Access: http://www.sciencedirect.com/science/article/pii/S0370269314007448
• ISSN: 0370-2693

Fast-rotating N=151 isotones 245Pu, 247Cm and 249Cf have been studied through inelastic excitation and transfer reactions with radioactive targets. While all have a ground-state band built on a νj15/2[734]9/2− Nilsson configuration, new excited bands have also been observed in each isotone. These odd-N excited bands allow a comparison of the alignment behavior for two different configurations, where the νj15/2 alignment is either blocked or allowed. The effect of higher order deformations is explored through cranking calculations, which help clarify the elusive nature of νj15/2 alignments. Keywords: Superheavy, Neutron-rich, Inelastic and transfer reactions, Rotational alignments, Higher-order deformations