Continuous Gamma-Radiation Accompanying Internal Conversion inBa137m

Abstract

A weak continuous gamma-radiation accompanying internal conversion has been observed from the decay of the isomeric state of ${\mathrm{Ba}}^{137}$. The probability of this emission is (1.17±0.27)×${10}^{-3\mathrm{}}$ photons in the energy range 50 to 100 kev per conversion electron, and (3.4±0.8)×${10}^{-3\mathrm{}}$ photons in the energy range 50 to 200 kev per conversion electron. The angular distribution of the continuous radiation in the energy range 50 to 200 kev has been measured at angles from 90° to 160° with the electron direction. There appears to be no deviation from isotropy.