The Ultraviolet Bands of Magnesium Hydride

Abstract

Extension of the ${}_{}{}^2{}_{}{}^{}\Pi _{}^{*}{}_{}{}^{}-{}_{}{}^2{}_{}{}^{}\Sigma$ system of MgH leads to the following values of the constants of the ${}_{}{}^2{}_{}{}^{}\Pi _{}^{*}{}_{}{}^{}$ state. Previous erroneous assignments of $K$ values in the bands of both MgH and MgD are corrected. Difficulties in the interpretation of the $\lambda 2348$ band of MgH and $\lambda 2360$ band of MgD are discussed.