High-resolution laser photofragment spectroscopy of GeH+ (A 1Π-X1Σ+)

High-resolution laser photodissociation spectra of the GeH + molecular ion in the visible region of the spectrum have been recorded between 541 and 613 nm by the detection of Ge + fragment ions, using a fast-ion-beam apparatus. Many of the lines have been assigned to rovibronic transitions in the A...

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Bibliographic Details
Published inMolecular physics Vol. 97; no. 1-2; pp. 53 - 63
Main Authors GIBBON, TIM, GEERS, ALFRED, HAN, JIA-XIANG, SARRE, PETER J.
Format Journal Article
LanguageEnglish
Published Taylor & Francis Group 20.07.1999
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Summary:High-resolution laser photodissociation spectra of the GeH + molecular ion in the visible region of the spectrum have been recorded between 541 and 613 nm by the detection of Ge + fragment ions, using a fast-ion-beam apparatus. Many of the lines have been assigned to rovibronic transitions in the A 1 Π-X 1 Σ + system, which is observed for the first time. The predissociated levels of the A 1 Π state lie between the fine structure dissociation asymptotes, Ge + ( 2 P 3/2 , 2 P 1/2 ) + H (i.e. they are Feshbach resonances), and show a pronounced dependence of the lifetime on the rotational quantum number. This is interpreted in terms of a strong variation in the coupling induced by the radial kinetic energy operator. Measurements of the angular distribution profiles and fragment translational energy releases are reported.
ISSN:0026-8976
1362-3028
DOI:10.1080/00268979909482809