Spectroscopy of AlAr and AlKr from 31 000 cm−1 to the ionization limit

Publisher Website
Google Scholar
Abstract
Spectra of jet‐cooled AlAr and AlKr have been collected over the range from 31 000 cm−1 to the ionization limit, using the technique of resonant two‐photon ionization spectroscopy with mass spectrometric detection. Adiabatic ionization potentials have been accurately measured for both molecules, and have been estimated for AlAr2 and AlAr3. The spin–orbit splittings in the X 2Π ground state have been determined for both AlAr and AlKr, and ground‐state bond strengths have been accurately measured as D0[AlAr, X1 2Π1/2(3p)] =122.4±4 cm−1 and D0[27Al 84Kr, X1 2Π1/2(3p)] =194.7±0.8 cm−1. These values have also been combined with the measured ionization potentials to derive D0(Al+–Ar)=982.3± 5 cm−1 and D0(Al+–Kr)=1528.5±2 cm−1.