THE DECAY OF Os¹⁹¹ AND Os¹⁹³

Abstract

The beta-and gamma-ray spectra of Oslgl and Oslg3 have been studied with a magnetic beta-ray spectrometer, scintillation spectron~eters, and coincidence circuits. T h e 14-hour isomer of 0~'~' decays via a 0.0742-Mev ( M 3 ) transition. Gamma rays of energy 0.0418 (lOOyo, E 3 ) , 0.0809 ( I % , M l + E 2 ) , 0.1287 (loo%, M l + E 2 ) , and 0.1858 (0.1%) Mev have been found to be associated w~t h the 14.6f 0.3 day decay of Oslgl and an extension of the accepted decay scheme D~O D O S~~.T h e followinrr 19 transitions have been associated with the 31.531 0.5