A STUDY OF THE GAMMA RADIATION FOLLOWING THERMAL NEUTRON CAPTURE BY SILICON

Abstract
A study of the gamma radiation following thermal neutron capture by natural silicon has been conducted. Precise energy measurements were obtained using a Ge(Li) counter and a decay scheme was constructed using the time correlation results obtained with a Ge(Li)–NaI(Tl) spectrometer. The neutron separation energy was found to be 8 474 ± 1 keV for 29Si. An examination of the reduced radiation widths revealed that, while E1 and E2 radiation agreed well with the single-particle estimate, the M1 strength was hindered by a factor of from 10 to 100.