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Published July 1, 1993 | public
Journal Article

Rotational analysis of the He I photoelectron spectrum of HF

Abstract

Combined theoretical and experimental studies of He I photoelectron spectra for photoionization of the X^1Σ^+ (v″ = 0) ground state HF leading to the X^2Π (v^+ = 0–2) and A ^2Σ^+ (v^+ = 0–3) ionic states, including detailed analyses of the rotational bandshapes, are reported. Agreement between the measured bandshapes and the calculated spectra, convoluted with the experimental resolution function (22 meV FWHM), is excellent. Ionization potentials of 16.046(1) eV and 19.116(2) eV are obtained for formation of the X and A ionic states, respectively. The vibrational spacings, deduced from the measured data by careful bandshape analysis, are in very good agreement with spectroscopic values.

Additional Information

© 1993 Elsevier. (First received 15 September 1992; in final form 18 January 1993) Work at the California Institute of Technology was supported by grants from the National Science Foundation, Air Force Office of Scientific Research, and the Office of Health and Environmental Research of the US. Department of Energy. We also acknowledge use of resources of the Jet Propulsion Laboratory/Caltech CRAY Y-MP2E/116 Supercomputer. The work at Kaiserslautern was supported by the Deutsche Forschungsgemeinschaft through Sonderforschungsbereich 91. AJY thanks the Fachbereich Physik of the Universität Kaiserslautern and the SFB 91 for their hospitality and support. We gratefully acknowledge A. Mank and colleagues for sharing with us their new results on threshold photoionization of HF prior to publication.

Additional details

Created:
August 20, 2023
Modified:
October 25, 2023