Laser induced fluorescence, energy transfer and dissociation of Cs2
- 15 August 1979
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 71 (4), 1585-1592
- https://doi.org/10.1063/1.438485
Abstract
Laser induced fluorescences of Cs2 excited by the Ar+ laser lines have been studied. A series of lines with vibrational progression and the successive diffuse bands in the region down to 16 200 cm−1 were found to be polarized and identified as the resonance fluorescence. The diffuse fluctuation band with a maximum of intensity at 16 400 cm−1 consists of several bands at regular interval and it was independent on the line of excitation. By applying the theory on the role of kinetic energy in the Franck–Condon principle proposed by Mulliken, the band was identified as a transition from the internuclear distance of maximum kinetic energy in the vibrational level of the excited state E 1πu. All the other fluorescence bands of low frequency were observed to be depolarized completely, and the intensities increased when a foreign gas was added. These bands were identified as the fluorescence from the states which were populated by collision‐induced transitions from the E state. Atomic fluorescence 6p 2P3/2→6s 2S1/2 is interpreted as the production of the excited atom Cs 6p 2P3/2 by predissociation of Cs2 E 1πu through interaction with, most probably, Cs2 B 1πu.Keywords
This publication has 21 references indexed in Scilit:
- Lifetime-measurements of alkali-molecules excited by different laserlinesThe European Physical Journal A, 1970
- Absorption Spectrum of Diatomic Cesium MoleculesThe Journal of Chemical Physics, 1968
- Note on a Band System of CaesiumPhysical Review B, 1936
- Ultraviolette fluoreszenzspektra des joddampfes: McLennan-BandenPhysica, 1935
- The Band Spectrum of CaesiumPhysical Review B, 1934
- The Interpretation of Band Spectra. Part IIc. Empirical Band typesReviews of Modern Physics, 1931
- Correlation of AtomicValues and Molecular Quantum Numbers, with Applications to Halogen, Alkaline Earth Hydride, and Alkali MoleculesPhysical Review B, 1930
- The Interpretation of Band Spectra. Parts I, IIa, IIbReviews of Modern Physics, 1930
- On the fluorescence of iodine vapour excited by ultra-violet lightProceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character, 1914
- On a fluorescence spectrum of iodine vapourProceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character, 1913