Table of Contents
Laser Chemistry
Volume 15, Issue 1, Pages 61-69

Vibrational Relaxation of the 2v5 Overtone of CDCl3 Highly Excited by a Tea CO2 Laser

1Licenciatura en Ciencias Físicas, Fac. Cs. Ex. y Nat., Universidad de Buenos Aires, Argentina
2Research career of CONICET, Argentina
3Laboratoire de Physique Moleculaire et Applications, CNRS. Université Pierre et Marie Curie, Paris, France
4INFIQC, Departamento de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Sucursal 16, C.C. 61, Córdoba 5016, Argentina
5Zufriategui 4380, Villa Martelli, Bs. As., 1603, Argentina

Received 16 October 1993

Copyright © 1994 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.


A homemade TEA CO2 laser tuned to the 1OP(48) line, 10.91 μm, was used to excite the v4 mode of CDCl3 (914 cm-1). The IR fluorescence signal from the CDCl32v5 overtone band (1492 cm-1) was isolated by means of a gaseous filter. The temporal variation of this fluorescence emission was studied as a function of the laser fluence. Under high excitation conditions, non-linear effects become obvious, and measured rate constants greater than predicted from linear kinetic rate equations have been found.