Observation of metastable autodetaching states of OH

Autodetachment has been observed in OH− ions that were produced from an H2O+ beam traversing a Cs vapor target, with lifetimes exceeding 10−5 s. Subsequent measurements of two types led to the conclusion that the cause is vibrationally induced autodetachment from excited v″ levels of the OH− electro...

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Bibliographic Details
Published inChemical physics letters Vol. 126; no. 3-4; pp. 266 - 272
Main Authors Bae, Y.K., Cosby, P.C., Peterson, J.R.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 09.05.1986
Elsevier Science
Subjects
Atomic and molecular collision processes and interactions
Atomic and molecular physics
Charge transfer
Exact sciences and technology
Physics
Ion pair production
Charge exchange
Inorganic free radical
Atom ion collision
Cesium Atoms
Experimental study
Intramolecular energy transfer
Inorganic compound
Diatomic molecule
Dissociative charge exchange
Electron autodetachment
Vibrationally excited state
Atom molecule collision
Hydroxyl
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Summary:Autodetachment has been observed in OH− ions that were produced from an H2O+ beam traversing a Cs vapor target, with lifetimes exceeding 10−5 s. Subsequent measurements of two types led to the conclusion that the cause is vibrationally induced autodetachment from excited v″ levels of the OH− electronic ground state. Approximate vibrational autodetachment rates for this non-Born-Oppenheimer process were calculated and found to vary from 24 to O.2 μs between v″ = 5 and v″ = 8. The present observations are consistent with a previous, but different observation by Doverspike, Champion, and Lam.
ISSN:0009-2614
1873-4448
DOI:10.1016/S0009-2614(86)80081-1