Simple model for decay of superdeformed nuclei
Charles StaffordPhysics Department, University of Arizona, 1118 East 4th Street, Tucson, Arizona 85721B. R. BarrettPhysics Department, University of Arizona, 1118 East 4th Street, Tucson, Arizona 85721
1999en
ABI
Abstract
Recent theoretical investigations of the decay mechanism out of a superdeformed nuclear band have yielded qualitatively different results, depending on the relative values of the relevant decay widths. We present a simple two-level model for the dynamics of the tunneling between the superdeformed and normal-deformed bands, which treats decay and tunneling processes on an equal footing. The previous theoretical results are shown to correspond to coherent and incoherent limits of the full tunneling dynamics. Our model accounts for experimental data in both the $A\ensuremath{\sim}150$ mass region, where the tunneling dynamics are coherent, and in the $A\ensuremath{\sim}190$ mass region, where the tunneling dynamics are incoherent.
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Cited by 20 references