Threshold electron photoionization study of H2: Vibration–rotation states of H+2(X 2Σ+g)
- 15 May 1976
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 64 (10) , 4093-4099
- https://doi.org/10.1063/1.431976
Abstract
The measurement of the rotational energy levels of H+2 (X 2Σ+g) for v=0–7 on ordinary hydrogen at room temperature is reported. The transitions are directly observed by means of a newly developed threshold electron analyzer which has an observed resolution (FWHM) of 0.003 eV and for which, unlike previous analyzers, the transmission probability goes identically to zero for energetic electrons. The molecular constants obtained are in agreement with values obtained via Rydberg series extrapolations and with theory. The adiabatic ionization potential of hydrogen was determined to be 124 424±9 cm−1.Keywords
This publication has 24 references indexed in Scilit:
- Degenerate autoionization processes in the photoionization of molecular hydrogenThe Journal of Chemical Physics, 1976
- Direct observation of rotational states of molecular ions in photoionization processesChemical Physics Letters, 1975
- Non-adiabatic calculations for H2+, HD+and D2+Molecular Physics, 1974
- Rotation-vibration level energies of the hydrogen and deuterium molecule-ionsAtomic Data and Nuclear Data Tables, 1974
- Vibrational spacings for H2+, D2+and H2Molecular Physics, 1973
- The photoelectron spectrum of H2Chemical Physics Letters, 1970
- Absorption Spectrum of H2 in the Vacuum-uv Region. II. Rydberg Series Converging to the First Six Vibrational Levels of the H2+ Ground StateThe Journal of Chemical Physics, 1970
- Absorption Spectrum of H2 in the Vacuum-uv Region. I. Rydberg States and Ionization EnergiesThe Journal of Chemical Physics, 1970
- Ionization of Molecules at Low EnergiesThe Journal of Chemical Physics, 1966
- THE LYMAN BANDS OF MOLECULAR HYDROGENCanadian Journal of Physics, 1959