Energy-Averaged Parity Nonconserving Effect in Neutron Scattering from Heavy Nuclei.

Abstract

The effect of parity nonconservation (PNC) averaged over compound resonances is considered using a semiclassical approximation. We demonstrate that the result of averaging depends crucially on the properties of the residual strong nucleon-nucleon interaction. The way to elucidate this problem would be to investigate experimentally the PNC spin rotation {psi} or the longitudinal polarization {ital a} of a nonmonochromatic neutron beam: {ital E}{approximately}{Delta}{ital E}{approximately}1 MeV. The magnitude of the effect can reach {psi}{approximately}{ital a}{approximately}10{sup {minus}5}{endash}10{sup {minus}4} per mean free path. {copyright} {ital 1996 The American Physical Society.}