Determining the Energy Barrier for Decay out of Superdeformed Bands

Details Determining the Energy Barrier for Decay out of Superdeformed Bands Determining the Energy Barrier for Decay out of Superdeformed Bands

2008-09-06

arxiv.org/abs/0809.1119v2

Phys. Lett. B 688, 110-113 (2010)

Physics

Nuclear Physics

Nuclear Theory

v1: 4 pages, 1 figure, 1 table. v2: 5 pages, 1 figure, 1 table; minor corrections and clarifications

Scientific paper

10.1016/j.physletb.2010.03.052

An asymptotically exact quantum mechanical calculation of the matrix elements for tunneling through an asymmetric barrier is combined with the two-state statistical model for decay out of superdeformed bands to determine the energy barrier (as a function of spin) separating the superdeformed and normal-deformed wells for several nuclei in the 190 and 150 mass regions. The spin-dependence of the barrier leading to sudden decay out is shown to be consistent with the decrease of a centrifugal barrier with decreasing angular momentum. Values of the barrier frequency in the two mass regions are predicted.

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