Half-lives of $^{101}$Rh, $^{102}$Rh and $^{102m}$Rh

Although $^{102, 102m}$Rh half-lives are known,\footnote{Shibata M., et al., Appl. Radio. Isot. 49, No.12, 1481 (1998)} the $^{101}$Rh half-life was previously determined only to within 9{\%}. A .5 x .5 x .050 in. rhodium piece was irradiated with 40 MeV protons at the LBNL 88-in. cyclotron producing the reactions $^{103}$Rh(p,3n)$^{101}$Pd, which decays to $^{101}$Rh, as well as $^{103}$Rh(p,t)$^{101}$Rh, $^{103}$Rh(p,pn) and (p,d)$^{102, 102m}$Rh. Two- or three-day spectra of the foil were taken using a HPGe detector weekly or every two weeks. 66 days after bombardment the shorter-lived activities had mostly decayed leaving only $^{101,102,102m}$Rhodium. The gamma spectra of three rhodium isotopes have, thus far, been followed for 475 days. Using the decay of the 127-, 198-, and 325-keV gammas for $^{101}$Rh, 556-keV for $^{102}$Rh, and 698- and 767-keV for $^{102}$Rh, our preliminary, self-consistent, half-life results shown in \textbf{{\{} {\}}} are compared with previous values shown in [ ]: [$^{101}$Rh $\sim $2.9y, 3.0(4)y, 3.3(3)y] \textbf{{\{}}3.9(2)y\textbf{{\}}} [$^{102m}$Rh 2.1(9)y, 3.742(10)y$^{a}$] \textbf{{\{}}3.6(1)y\textbf{{\}}} [$^{102}$Rh 210(6)d, 205(10)d, 207.3(17)d$^{a}$]$^{ }$\textbf{{\{}}206.3(8)d\textbf{{\}}}