We present the results of an experimental study of allowed Gamow-Teller ${\beta }^{+}$ and electron-capture decays of ${}_{}{}^{14}{}_{}{}^{}\mathrm{O}$, ${}_{}{}^{21}{}_{}{}^{}\mathrm{Na}$, ${}_{}{}^{25}{}_{}{}^{}\mathrm{Al}$, ${}_{}{}^{26}{}_{}{}^{}\mathrm{Si}$, ${}_{}{}^{29}{}_{}{}^{}\mathrm{P}$, ${}_{}{}^{30}{}_{}{}^{}\mathrm{P}$, ${}_{}{}^{30}{}_{}{}^{}\mathrm{S}$, ${}_{}{}^{31}{}_{}{}^{}\mathrm{S}$, ${}_{}{}^{33}{}_{}{}^{}\mathrm{Cl}$, ${}_{}{}^{34}{}_{}{}^{}\mathrm{Cl}$, ${}_{}{}^{35}{}_{}{}^{}\mathrm{Ar}$, ${}_{}{}^{38}{}_{}{}^{}\mathrm{Ca}$, and ${}_{}{}^{41}{}_{}{}^{}\mathrm{Sc}$. Thirteen new branches have been found and the precision has been increased, or upper limits reduced, on the intensities of more than 50 others.

RADIO ACTIVITY ${}_{}{}^{14}{}_{}{}^{}\mathrm{O}$, ${}_{}{}^{21}{}_{}{}^{}\mathrm{Na}$, ${}_{}{}^{25}{}_{}{}^{}\mathrm{Al}$, ${}_{}{}^{26}{}_{}{}^{}\mathrm{Si}$, ${}_{}{}^{29}{}_{}{}^{}\mathrm{P}$, ${}_{}{}^{30}{}_{}{}^{}\mathrm{P}$, ${}_{}{}^{30}{}_{}{}^{}\mathrm{S}$, ${}_{}{}^{31}{}_{}{}^{}\mathrm{S}$, ${}_{}{}^{33}{}_{}{}^{}\mathrm{Cl}$, ${}_{}{}^{34}{}_{}{}^{}\mathrm{Cl}_{}^m{}_{}{}^{}$, ${}_{}{}^{35}{}_{}{}^{}\mathrm{Ar}$, ${}_{}{}^{38}{}_{}{}^{}\mathrm{Ca}$, ${}_{}{}^{41}{}_{}{}^{}\mathrm{Sc}$ measured $I_{\gamma }$; ${}_{}{}^{26}{}_{}{}^{}\mathrm{Si}$, ${}_{}{}^{29}{}_{}{}^{}\mathrm{P}$, ${}_{}{}^{30}{}_{}{}^{}\mathrm{S}$, ${}_{}{}^{31}{}_{}{}^{}\mathrm{S}$, ${}_{}{}^{34}{}_{}{}^{}\mathrm{Cl}_{}^m{}_{}{}^{}$, ${}_{}{}^{38}{}_{}{}^{}\mathrm{Ca}$ measured $T_{\frac{1}{2}}$.

• Received 9 May 1980

DOI:https://doi.org/10.1103/PhysRevC.22.1696