NEARBY DOORWAY STATES, PARITY DOUBLETS, AND PARITY MIXING IN COMPOUND NUCLEAR-STATES

We discuss the implications of a doorway state model for parity mixing in compound nuclear states. We argue that in order to explain the tendency of parity violating asymmetries measured in 233Th to have a common sign, doorway states that contribute to parity mixing must be found in the same energy neighborhood of the measured resonance. The work concentrates on novel nuclear structure input, namely, that in the region of interest (233Th) nuclei exhibit octupole deformations which leads to the existence of nearby parity doublets. These parity doublets are then used as doorway states in a model for parity mixing. © 1995 The American Physical Society.