Angular Correlation of the Gamma Rays fromMn56

Abstract

The angular correlations of the gamma rays of ${\mathrm{Fe}}^{56}$ emitted in the decay of ${\mathrm{Mn}}^{56}$ have been studied using sodium iodide scintillation counters. All three excited states of ${\mathrm{Fe}}^{56}$ involved in the decay of ${\mathrm{Mn}}^{56}$ were found to have spin 2, even parity. The spin of the ground state of ${\mathrm{Mn}}^{56}$ is probably 2, the parity even.