Fluorescence from photoexcitation of CF3X (X=H, Cl, and Br) at 50–106 nm
- 1 January 1990
- journal article
- conference paper
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 92 (1) , 133-139
- https://doi.org/10.1063/1.458482
Abstract
The photoabsorption and fluorescence cross sections of CF3H, CF3Cl, and CF3Br are measured in the 50–106 nm region using synchrotron radiation. Fluorescence spectra from photoexcitation of these molecules are dispersed to identify the emitting species to be mainly the excited CF*2, CF*3, and CF3X+*, but not CF+*3. The fluorescence excitation function of CF3X (X=F, H, Cl, or Br) is generally divided into three excitation bands; each band produces a specific excited species. The fluorescence yields of the studied molecules are determined and correlated with dissociation thresholds and ionization potentials. The excited ion states that may emit are discussed.Keywords
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