Laser Chemistry

Laser Chemistry / 1993 / Article

Open Access

Volume 13 |Article ID 056828 |

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.

Laser Induced Fluorescence From CF2 Excited at 248 Nm

Received18 Feb 1993


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(v1,62v1,0)X˜1A1(v1,v2,0) transitions with Δv1=0 and 0 ≤ v2 ≤ 30. The Franck – Condon factors of the Ã1B1 (0, 6, 0) –X˜1A1 (0, v2, 0) transitions, the frequencies of the bending vibration (ω2 =673± 2cm–1) and the anharmonicity constants x22 = –0.94 ± 0.08 cm-1 and x22 = –0.44 ± 0.10 cm–1 were more precisely determined. For the first time higher anharmonicity constants are evaluated with x12 + x112 = –3.5 ± 1.0 cm–1 and x122= –0.05 ± 0.02 cm–1.

Copyright © 1993 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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