Gamma Ray Transitions following keV Neutron Capture in 2s-1d Shell Nuclei

Abstract

A Ge(Li) detector has been used to observe y-ray transitions after the capture of keV neutrons in natural samples of F, AI, Si, Sand Ar. Transitions to positive and negative parity states show that there are strong p-wave resonances as well as s-wave resonances in this mass region. The even-Z nuclei decay more by El transitions than by Ml. Odd-Z nuclei decay by strong Ml transitions.