Spins of resonances in reactions of neutrons with 238U and 113Cd

In this paper experiments are described that have led to the assignment of spins of a large number of s- and p-wave resonances in reactions of epithermal neutrons with the nuclei {sup 238}U and {sup 113}Cd. The gamma-ray spectra of the (n,{gamma}) reactions have been measured using the time-of-flight technique at the GELINA pulsed neutron source facility. For the present spin determinations we have exploited the fact that the population through gamma radiation of low-lying nuclear states from the compound nucleus is dependent on the resonance spin. These assignments are important for the analysis of measurements of parity nonconservation in compound nuclei. {copyright} {ital 1997} {ital The American Physical Society}