Low energy states inTa180

A study of both the ${}_{}{}^{180}{}_{}{}^{}\mathrm{Ta}$($n$,$\gamma$)${}_{}{}^{181}{}_{}{}^{}\mathrm{Ta}$ and ${}_{}{}^{181}{}_{}{}^{}\mathrm{Ta}$($\gamma$,$n$)${}_{}{}^{180}{}_{}{}^{}\mathrm{Ta}$ reaction reveals energy levels in ${}_{}{}^{180}{}_{}{}^{}\mathrm{Ta}$ at 38, 73, 109, 181, 231, 258, and 309 keV. The 73 keV level is shown to be the long-lived $J=9\mathrm{}$ state occurring in nature. Neutron separation energies of 7579±2 keV and 6063.3±0.5 keV have been determined for the ${}_{}{}^{180}{}_{}{}^{}\mathrm{Ta}$-${}_{}{}^{181}{}_{}{}^{}\mathrm{Ta}$ and ${}_{}{}^{181}{}_{}{}^{}\mathrm{Ta}$-${}_{}{}^{182}{}_{}{}^{}\mathrm{Ta}$ pairs, respectively. The $Q$ value for thermal nuetron capture on ${}_{}{}^{180}{}_{}{}^{}\mathrm{Ta}$ was found to be 7652.3±0.5 keV.