An investigation of the decay schemes of ${\mathrm{Tc}}^{95}$ and ${\mathrm{Tc}}^{97}$ has been made by using high-resolution conversion-electron spectrographs, gamma-ray scintillation detectors, and coincidence techniques.

In addition to the 38.9-kev isomeric transition in ${\mathrm{Tc}}^{95}$, eight transitions of the following energies have been assigned to ${\mathrm{Mo}}^{95}$: 204.2, 583.9, 763, 767.9, 784, 788.0, 822.5, and 837.3 kev. A decay scheme is proposed.

The isomer of ${\mathrm{Tc}}^{97}$ has been shown to decay by a single $M4\mathrm{}$ transition of 96.5±0.1 kev. The experimental $K:L:M$ relative conversion-electron intensities for this transition are 1:0.48:0.13.

• Received 30 March 1959

DOI:https://doi.org/10.1103/PhysRev.115.1687