Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2000-10-23
Nucl.Phys. A696 (2001) 85-122
Physics
Nuclear Physics
Nuclear Theory
33pages, 32 figures, submitted to Nucl.Phys.A
Scientific paper
10.1016/S0375-9474(01)01123-X
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.
Matsuo Mamoru
Shimizu Yoshifumi R.
Yoshida Koji
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