The nature of the superband in backbending for the nucleus /sup 156 /Dy

El Masri, Youssef;Vervier, Jean;Faessler, A.
(1977) Nuclear Physics, Section A — Vol. A279, n° 2, p. 223-236 (1977)

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  • El Masri, YoussefUCLouvain
    Author
  • Vervier, JeanUCLouvain
    Author
  • Faessler, A.
    Author
Abstract
In two recent publications by Broglia et al. (see Phys. Lett., vol.57B, p.113 (1975)), it has been shown that backbending can be understood by mixing the ground (g) and a /b K/=1 (super)band (s1). It has also been claimed that a /b K/=0 superband (s0) is not able to reproduce the data. The authors show that, in /sup 156/Dy, and with the inclusion of the gamma -band, a /b K/=0 or a /b K/=1 superband can explain the data equally well. The parameters of the band-mixing model may be reduced by using, for the g-, gamma - and beta -bands, a generalization of the rotational-vibrational model. The g, gamma , beta - and s/b K/ band mixing fits are greatly improved if the moment of inertia of the g-, gamma - and beta -bands are described by the VMI model. Inclusion of the low spin members of the superband in the fit indicates a slight preference for an s0 band.
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El Masri, Y., Vervier, J., & Faessler, A. (1977). The nature of the superband in backbending for the nucleus /sup 156 /Dy. Nuclear Physics, Section A, A279(2), 223-236. https://hdl.handle.net/2078.5/149204 (Original work published 1977)