PARITY NONCONSERVATION IN NEUTRON-CAPTURE ON CD-113

Parity nonconservation was studied for 23 p-wave resonances in Cd-113 up to E-n= 500 eV at the LANSCE pulsed neutron source using a longitud inally polarized neutron beam and the time-of-flight method. The helic ity dependence of the total neutron capture cross section was measured with an enriched Cd-113 target and with a target of natural cadmium. Parity violating effects were observed for several resonances in Cd-11 3 and Cd-111. A root-mean-square value of the parity nonconserving mat rix element M-J=1 = 2.9(-0.9)(+1.3) meV was obtained for the spin J=1 levels in the compound nucleus Cd-114. This result from the 3p-peak re gion of the neutron strength function is compared with the parity viol ation results for nuclei from the 4p-peak region. [S0556-2813(98)02210 -9].