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FOURIER TRANSFORM SPECTROSCOPY OF THE $1^{3}\Delta_{g}-b^{3}\Pi_{u}$ TRANSITION IN $^{6}Li_{2},$

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/12497

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Title: FOURIER TRANSFORM SPECTROSCOPY OF THE $1^{3}\Delta_{g}-b^{3}\Pi_{u}$ TRANSITION IN $^{6}Li_{2},$
Creators: Linton, C.; Bacis, R.; Crozet, P.; Martin, F.; Ross, A. J.; Vergès, J.
Issue Date: 1991
Publisher: Ohio State University
Abstract: The $1^{3}\Delta_{g}-b^{3}\Pi_{u}$ transition of $^{6}Li_{2}$, occurring in the visible region between 16000 - 20000 $cm^{-1}$, has been obtained at high resolution using Fourier Transform Spectrometers. The relaxed emission spectrum was observed via Collisionally Induced Fluorescnce (CIF) following (a) excitation of the $C^{1}\Pi_{u}\leftarrow X^{1}\sum_{g}^{+}$ transition by UV lines of Argon and Krypton lasers, and collisional transfer from $C^{1}\Pi_{u}$ to $1^{3}\Delta_{g}$or (b) excitation of via $F^{1}\sum_{g}^{+}\leftarrow A^{1}\sum_{u}^{+}\leftarrow X^{1}\sum_{g}^{+}$ one colour double resonance using a CW ring dye laser, and transfer from $F^{1}\sum_{g}^{+}$ to $1^{3}\Delta_{g}$. The spectra showed many lines which are broadened and shifted as a result of predissociation of $b^{3}\Pi_{u}$ by the $a^{3}\sum_{u}^{+}$ state and many examples of perturbations of $1^{3}\Delta_{g}$ by $2^{3}\Pi_{g}$. Line widths and shifts and rotational constants are shown to be compatible with ab-initio calculations. Details of these results, analysis of perturbations and examination of possible collisional propensity rules will be discussed.
URI: http://hdl.handle.net/1811/12497
Other Identifiers: 1991-TB-11
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