Decay ofPm150

A grey wedge pulse height analyzer was used to study the decay of ${\mathrm{Pm}}^{150}$ with and without coincidence arrangements. Gamma rays 3.0, 2.6, 2.0, 1.67, 1.32, 1.17, 0.82, 0.43, and 0.34 Mev in energy were observed, some in coincidence with 2.01- and 3.00-Mev negatrons which had previously been shown to be emitted. A decay scheme is suggested and some remarks on the beta stability of ${\mathrm{Nd}}^{150}$ are made.