A Study of the Radiations from the Disintegration ofBr82

Abstract

The radiations from the 36-hour activity ascribed to ${\mathrm{Br}}^{82}$ have been studied by coincidence methods, absorption, and spectrometer techniques. The beta-ray spectrum is simple, and its endpoint is at 0.465±0.01 Mev. Each beta-ray is accompanied by three cascade gamma-rays of energies 0.547±0.01, 0.787±0.015, and 1.35±0.03 Mev. Neither orbital electron capture to ${\mathrm{Se}}^{82}$ nor internal conversion of the gamma-rays is observed. Coincidence measurements made on the beta-ray spectrometer yield independent confirmatory evidence of the simplicity of the beta-ray spectrum. Some considerations concerning the excited states of ${\mathrm{Kr}}^{82}$ obtained in this disintegration are presented.