The Pressure Effect on theCBand of Strontium Hydride

Abstract

At low hydrogen pressures the emission spectrum of the 3808A band of SrH shows a sharp break-off at $R\left(18\right)\mathrm{}$, while at high pressures the lines extend to $R\left(49\right)\mathrm{}$. The presence of lines with high $K$ values allows an accurate determination of the constants of the upper state. Analysis shows the presence of an uncoupling term -0.1415 ($K-1\mathrm{}$) in the upper state. Perturbations due to resonance and predissociation are present. The electronic configurations and probable dissociation energies are considered.