Inner-valence shell photoionization of Ar/sub 2/, Ar/sub 3/, Kr/sub 2/, and Kr/sub 3/

Journal Article · Tue Nov 01 00:00:00 EST 1983 · J. Chem. Phys.; (United States)

OSTI ID:5704533

White, M G; Grover, J R

The inner-valence shell photoionization spectra (420<500 A) of Ar/sub 2/, Ar/sub 3/, Kr/sub 2/, and Kr/sub 3/ have been obtained with a molecular beam apparatus using synchrotron radiation from the VUV storage ring at the National Synchrotron Light Source. The photoionization spectra exhibit regular series of window resonances which are closely associated with the ms..-->..np Rydberg series in atomic Ar(m = 3) and Kr(m = 4). Vertical ionization potentials of the lowest ionic state in the molecular ms regions were obtained by series extrapolation and these were used to estimate the well depths in the Franck--Condon region and dissociation energies. Assignments of the observed Rydberg transitions were made by analogy with similar excitations in He/sub 2/ and the group II and II B metal dimers. For Ar/sup +//sub 2/ and Kr/sup +//sub 2/, the observed structure is tentatively assigned to 1/sub u/ (/sup 1/Pi/sub u/) and O/sup +//sub u/ (/sup 1/..sigma../sub u//sup +/) states which correlate with the ''promoted'' nd..pi../sub g/ and ndsigma/sub g/ series. Plausible assignments for the trimer spectra are also discussed.

• Research Organization: Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973
• OSTI ID: 5704533
• Journal Information: J. Chem. Phys.; (United States), Vol. 79:9
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ARGON
PHOTOIONIZATION
KRYPTON
DIMERS
DISSOCIATION ENERGY
INNER-SHELL IONIZATION
IONIZATION POTENTIAL
MOLECULAR BEAMS
MOLECULES
RYDBERG STATES
SYNCHROTRON RADIATION
BEAMS
BREMSSTRAHLUNG
ELECTROMAGNETIC RADIATION
ELEMENTS
ENERGY
ENERGY LEVELS
EXCITED STATES
FLUIDS
GASES
IONIZATION
NONMETALS
RADIATIONS
RARE GASES
640302* - Atomic
Molecular &amp; Chemical Physics- Atomic &amp; Molecular Properties &amp; Theory