Microscopic calculations of parity nonconserving spreading widths in nuclei

Abstract

The Parity Nonconserving (PNC) spreading widths Γ PNC ↓ of compound nuclear states are investigated using a microscopic approach based on the theory of an induced PNC interaction. The calculations are performed for a wide range of nuclear masses so that the mass dependence of the PNC spreading width can be studied. While the quantity Γ PNC ↓ undergoes fluctuations, its overall A dependence is found to be Γ PNC ↓ ∼ A 1 3 , in both the analytical estimates and the calculated values. The relation to other models and to other types of spreading widths is also discussed.