Gamma Radiation fromCo56andCo58

The gamma rays following the decay of ${\mathrm{Co}}^{56}$ and ${\mathrm{Co}}^{58}$ have been observed by means of a large NaI(Tl) crystal scintillation spectrometer. Relative intensities of the ${\mathrm{Co}}^{56}$ gamma radiation are presented as well as ratios of orbital electron capture to positron emission for both ${\mathrm{Co}}^{56}$ and ${\mathrm{Co}}^{58}$.