Ba+ (6p 2P) gas phase collisional quenching and intramultiplet mixing

Collisional quenching and intramultiplet mixing of Ba+ (6p 2P1/2,3/2) has been studied by laser-pumping 6p 2P3/2 and measurement of the 6p 2P3/2 to 6p 2P1/2 population ratio under steady-state conditions. Gas phase Ba+ was generated by the methods of two photon ionization of Ba and by multiphoton di...

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Bibliographic Details
Published in:The Journal of chemical physics 1984-06, Vol.80 (12), p.6099-6104
Main Authors: HOVIS, F. E, GELBWACHS, J. A
Format: Article
Language:English
Subjects:
Atomic and molecular collision processes and interactions
Atomic and molecular physics
Exact sciences and technology
Physics
Scattering of atoms, molecules and ions
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Summary:Collisional quenching and intramultiplet mixing of Ba+ (6p 2P1/2,3/2) has been studied by laser-pumping 6p 2P3/2 and measurement of the 6p 2P3/2 to 6p 2P1/2 population ratio under steady-state conditions. Gas phase Ba+ was generated by the methods of two photon ionization of Ba and by multiphoton dissociation and ionization of BaI2. The cross sections for quenching of 6p 2P1/2 by N2, CH4, C2H6, and C2H4 are 17 Å2, ≤3, ≤6, and 120 Å2, respectively. The cross sections for 6p 2P3/2→6p 6p 2P1/2 mixing by N2, CH4, C2H6, and C2H4 are 24, 70, 100, and 80 Å2, respectively. These cross sections are comparable to those of the alkali neutrals.
ISSN:0021-9606
1089-7690
DOI:10.1063/1.446710