Directional correlations of gamma rays in 77As

Abstract

Directional correlation measurements have been made for y-transitions in "As following the decay of 11.30 h "Ge using two Ge(Li) detectors. Using the method of Chow et al., mixing ratios of y-transitions and the spins of seven levels have been deduced assuming only a ground-state spin of 4. Levels for which spins were deduced are 216(s), 264(*), 475(3), 632(f), 1189(g), 1458@) and 1528(#) keV. E RADIOACTIVITY "Ge [from 76Ge(n, r)]; measured n(6). "As levels deduced J, y mixing ratios.