Pair excitations and a proton band crossing in superdeformed Gd150

Fallon, P. and Beausang, C.W. and Clarke, S. and Twin, P.J. and Beck, F.A. and Byrski, Th and Curien, D. and Dagnall, P.J. and DeFrance, G. and Duchêne, G. and Forsyth, P.D. and Haas, B. and Joyce, M.J. and Macchiavelli, A.O. and Paul, E.S. and Sharpey-Schafer, J.F. and Simpson, J. and Vivien, J.P. and Berg, S. and Nazarewicz, W. (1994) Pair excitations and a proton band crossing in superdeformed Gd150. Physical review letters, 73 (6). pp. 782-785. ISSN 1079-7114

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An excited superdeformed (SD) band in 150 Gd is associated with a two-particle-two-hole proton excitation and provides the first evidence for collective proton pair excitations in a SD nucleus. This band is seen to exhibit a discontinuity in the γ-ray transition energies (backbending), which is interpreted as a band crossing associated with the alignment of a pair of N=6 protons. There is further evidence that this excited SD band decays into the yrast SD band.

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Journal Article
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Physical review letters
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01 Apr 2019 12:25
Last Modified:
20 Sep 2023 01:21