Parity Nonconservation in Neutron Capture on 113Cd
Copyright held by American Physical Society. First published as SJ Seestrom et al, Parity nonconservation in neutron capture on 113Cd, Physical Review C, 58:5, 2977–2985, doi: 10.1103/PhysRevC.58.2977.
Parity nonconservation was studied for 23 p-wave resonances in 113Cd up to En=500eV at the LANSCE pulsed neutron source using a longitudinally polarized neutron beam and the time-of-flight method. The helicity dependence of the total neutron capture cross section was measured with an enriched 113Cd target and with a target of natural cadmium. Parity violating effects were observed for several resonances in 113Cd and 111Cd. A root-mean-square value of the parity nonconserving matrix element MJ=1=2.9-0.9+1.3meV was obtained for the spin J=1 levels in the compound nucleus 114Cd. This result from the 3p-peak region of the neutron strength function is compared with the parity violation results for nuclei from the 4p-peak region.