Abstract
$^{51}\mathrm{Sc}$ was produced with the $^{48}\mathrm{Ca}(\ensuremath{\alpha},p)^{51}\mathrm{Sc}$ reaction at ${E}_{\ensuremath{\alpha}}=18$ MeV and pneumatically transferred to a shielded counting area. The $\ensuremath{\beta}$ decay scheme of $^{51}\mathrm{Sc}$ was determined from measurements of the $\ensuremath{\gamma}$ singles and $\ensuremath{\gamma}\ensuremath{-}\ensuremath{\gamma}$ coincidence spectra using ${50\ensuremath{-}\mathrm{c}\mathrm{m}}^{3}$ Ge(Li) detectors. This investigation yielded a more accurate determination of the $^{51}\mathrm{Sc}$ half-life (12.4 \ifmmode\pm\else\textpm\fi{} 0.1 s), the observation of previously unknown $\ensuremath{\beta}$ branches to $^{51}\mathrm{Ti}$ levels at 2691, 2731, 2919, 3062, 3237, 3619, 4095, 4186, and 4881 keV, and the assignment of new levels in $^{51}\mathrm{Ti}$ at 3062, 4095, and 4186 keV. In addition, the decay scheme provides parity assignments and spin restrictions for a number of states in $^{51}\mathrm{Ti}$.RADIOACTIVITY $^{51}\mathrm{Sc}$, measured ${T}_{\frac{1}{2}}$, ${E}_{\ensuremath{\gamma}}$, ${I}_{\ensuremath{\gamma}}$, $\ensuremath{\gamma}\ensuremath{-}\ensuremath{\gamma}$ coincidence; deduced decay scheme, $log\mathrm{ft}$. $^{51}\mathrm{Ti}$ deduced levels, $J$, $\ensuremath{\pi}$. Enriched targets, Ge(Li) detectors.
Published Version
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