Study of Nuclear States of Several Odd-ANuclei68<~Z<~79Through Electromagnetic Excitation from 2.3 to 3.6 MeV

34 excited states have been studied between 2.3 and 3.5 MeV in ${}_{}{}^{167}{}_{}{}^{}\mathrm{Er}$, ${}_{}{}^{179}{}_{}{}^{}\mathrm{Hf}$, ${}_{}{}^{191}{}_{}{}^{}\mathrm{Ir}$, and ${}_{}{}^{197}{}_{}{}^{}\mathrm{Au}$ by observing the decay of the isomeric levels in these nuclei following electron and photon activation. 28 of these states are observed for the first time. Of the 34 observed transitions, $M1+E2\mathrm{}$ multipolarity assignment is made to 20, two are identified as $E0\mathrm{}$ transitions, and one is assigned $E1\mathrm{}$ multipolarity. Accurate values for the isomeric half-lives are also presented.