Disintegration Scheme ofFe59

The radiations accompanying the disintegration of ${\mathrm{Fe}}^{59}$ have been investigated using lens spectrometer and scintillation counter techniques. Three beta-ray spectra of end points 1560±8 kev (0.3 percent), 462±3 kev (53.9 percent), and 271±3 kev (45.8 percent) lead to the ground state, to 1098-kev and 1289-kev excited states of ${\mathrm{Co}}^{59}$. The 1560-kev spectrum has a forbidden shape; the shapes of the other partial spectra are allowed. Gamma-rays of 191±2 kev (2.8 percent), 1098±6 kev (56.7 percent) and 1289±6 kev (43 percent) represent all the transitions possible between the three ${\mathrm{Co}}^{59}$-states. The conversion coefficients characterize the 191-kev and the 1098-kev transitions as magnetic dipoles, the 1289-kev transition as electric quadrupole.