G. Wlnkelmann, R. Kuhls, R. Osmanow, E. Linke, "Laser Induced Fluorescence From CF2 Excited at 248 Nm", Laser Chemistry, vol. 13, Article ID 056828, 13 pages, 1993. https://doi.org/10.1155/1993/56828
Laser Induced Fluorescence From CF2 Excited at 248 Nm
KrF–laser-induced fluorescence from CF2-radicals was investigated during photolysis of CF2Cl2 and CF2HCl by 193 nm laserlight. In contrast to other publications, which postulated single-vibronic-level fluorescence, the fluorescence is caused by excitation from four closely situated absorption bands. These fluorescence bands of four series, are assigned to Ã1B1 − 1A1 transitions with and 0 ≤ ≤ 30. The Franck – Condon factors of the Ã1B1 (0, 6, 0) –1A1 (0, , 0) transitions, the frequencies of the bending vibration ( =673± 2cm–1) and the anharmonicity constants = –0.94 ± 0.08 cm-1 and = –0.44 ± 0.10 cm–1 were more precisely determined. For the first time higher anharmonicity constants are evaluated with + = –3.5 ± 1.0 cm–1 and = –0.05 ± 0.02 cm–1.
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