VUV spectroscopy of rare gas van der Waals dimers

Conference · Sun Aug 01 00:00:00 EDT 1982

OSTI ID:6370175

Dehmer, Patricia M.; Pratt, Stephen T.

We have undertaken a systematic study of the photoionization spectra of the homonuclear and heteronuclear rare gas dimers in order to better understand the nature of the bonding in the Rydberg states adnd ions of these molecules. We have obtained results for Ar₂, Kr₂, Xe₂, NeAr, NeKr, NeXe, ArKr, ArXe, and KrXe. Of the remaining dimer species (Ne₂ and the Herare gas dimers), only Ne₂ has been studied using photoionization mass spectrometry. The results of the present series of experiments provide information both on the excited states of the neutral dimers and on the ground and excited states of the dimer ions. Using the data obtained in these measurements, we are able to compile for the first time a nearly complete list of ground state dissociation energies for the homonuclear and heteronuclear rare gas dimer ions. Somewhat less complete results are obtained for the excited states of these species. The observed trends in binding energy provide an excellent example of the systematic changes that occur as a result of changes in atomic orbital energies, polarizability, and internuclear distance, and these trends can be explained qualitatively in terms of simple molecular orbital theory.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE; US Department of the Navy, Office of Naval Research (ONR)
• DOE Contract Number: W-31-109-ENG-38
• OSTI ID: 6370175
• Report Number(s): CONF-820853-4; ON: DE83007864
• Resource Relation: Conference: NATO conference on photophysics and photochemistry in the vacuum ultraviolet, Lake Geneva, WI, USA, 15 Aug 1982
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
RARE GASES
PHOTOIONIZATION
DIMERS
DISSOCIATION
EXCITED STATES
EXPERIMENTAL DATA
FINE STRUCTURE
GROUND STATES
MASS SPECTROSCOPY
MOLECULAR ORBITAL METHOD
MOLECULAR STRUCTURE
RYDBERG CORRECTION
CORRECTIONS
DATA
ELEMENTS
ENERGY LEVELS
FLUIDS
GASES
INFORMATION
IONIZATION
NONMETALS
NUMERICAL DATA
SPECTROSCOPY
640302* - Atomic
Molecular & Chemical Physics- Atomic & Molecular Properties & Theory