Half-Lives ofV46,Mn50, andCo54

The nuclides ${}_{}{}^{46}{}_{}{}^{}\mathrm{V}$, ${}_{}{}^{50}{}_{}{}^{}\mathrm{Mn}$, and ${}_{}{}^{54}{}_{}{}^{}\mathrm{Co}$ were formed via the ($p, n$) reaction at $E_p=10\mathrm{}$ MeV and half-lives were measured by observing $\beta$ rays in a plastic scintillator. Values obtained were 425.3±2.0, 285.1±0.9, and 193.1±0.8 msec, respectively. The results agree with previous work within errors and thus confirm the systematic behavior of these $0^{+}$→$0^{+}$ superallowed Fermi $\beta$ decays.