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Barrier penetration and rotational damping of thermally excited superdeformed nuclei | | K.Yoshida
; M.Matsuo
; Y.R.Shimizu
; | | Date: |
23 Oct 2000 | | Journal: | Nucl.Phys. A696 (2001) 85-122 | | Subject: | nucl-th | | Abstract: | We construct a microscopic model of thermally excited superdeformed states that describes both the barrier penetration mechanism, leading to the decay-out transitions to normal deformed states, and the rotational damping causing fragmentation of rotational E2 transitions. We describe the barrier penetration by means of a tunneling path in the two-dimensional deformation energy surface, which is calculated with the cranked Nilsson-Strutinsky model. The individual excited superdeformed states and associated E2 transition strengths are calculated by the shell model diagonalization of the many-particle many-hole excitations interacting with the delta-type residual two-body force. The effect of the decay-out on the excited superdeformed states are discussed in detail for $^{152}$Dy, $^{143}$Eu and $^{192}$Hg. | | Source: | arXiv, nucl-th/0010074 | | Services: | Forum | Review | PDF | Favorites | |
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