PARITY VIOLATION IN CHARGED-PARTICLE RESONANCE REACTIONS

Parity nonconservation (PNC) measurements utilizing charged-particle r esonance reactions are proposed. PNC observables have been calculated for over 300 resonance pairs (with the same angular momentum and oppos ite parity) in five s-d shell nuclei. Detailed numerical results are p resented for the longitudinal analyzing powers in the P-31((p) over ri ght arrow, alpha(0)) reaction. There is strong dependence on energy, a ngle, and resonance parameters. A figure of merit that includes both t he relative enhancement of the parity violation and the cross section is used to identify the most promising resonances for study. A propose d detector design and experimental procedure are described. These meas urements should provide information on the weak spreading width (the e ffective nucleon-nucleus weak interaction) in light nuclei.