BETA- AND GAMMA-RAY SPECTROSCOPY OF 80MBR

Decay of80mBr was investigated. The half-lives of the isomeric and the ground states of80Br were obtained to be 4.42±0.01 h. and 16.8±0.1 min, respectively. Beta-ray, gamm-ray and gamma-gamma coincidence studies were carried out and energies and relative intensities of beta and gamma transitions were determined. Kurie plot analyses of negatrons and positrons give the maximum energies of 2.000±0.016 MeV and 0.850±0.007 MeV, respectively. The 1.478 MeV 0 + level of 80 Se and the 1.320 MeV 0 + and 1.256 MeV 2 + levels of80Kr were confirmed. © 1969, THE PHYSICAL SOCIETY OF JAPAN. All rights reserved.