High resolution laser photofragment spectroscopy of PH+

Abstract
High resolution electronic spectra of the 1–2 and 0–1 bands of the A 2Δ-X 2Π system of PH+ have been recorded by laser photofragment spectroscopy. Nuclear hyperfine structure due to the 31P and 1H nuclei is resolved and hyperfine parameters for both nuclei in the ground and excited electronic states are obtained. The parameters are discussed in terms of the electronic structure of the PH+ molecule.