| Numéro |
J. Phys. IV France
Volume 01, Numéro C7, Décembre 1991
2nd International ConferenceLaser M2P |
|
|---|---|---|
| Page(s) | C7-471 - C7-476 | |
| DOI | https://doi.org/10.1051/jp4:19917125 | |
2nd International Conference
Laser M2P
J. Phys. IV France 01 (1991) C7-471-C7-476
DOI: 10.1051/jp4:19917125
1 Laboratoire de Spectrométrie Physique, Université Joseph Fourier/Grenoble I, BP. 87, F-38402 St-Martin-d'Hères cedex, France
2 Service National des Champs Intenses, C.N.R.S., BP. 166X, F-38042 Grenoble cedex, France
© EDP Sciences 1991
Laser M2P
J. Phys. IV France 01 (1991) C7-471-C7-476
DOI: 10.1051/jp4:19917125
INTRACAVITY LASER ABSORPTION SPECTROSCOPY OF NO2 AND CH4 COOLED IN A SLIT JET SUPERSONIC EXPANSION
A. CAMPARGUE1, M. CHENEVIER1, A. DELON2, R. JOST2 and F. STOECKEL11 Laboratoire de Spectrométrie Physique, Université Joseph Fourier/Grenoble I, BP. 87, F-38402 St-Martin-d'Hères cedex, France
2 Service National des Champs Intenses, C.N.R.S., BP. 166X, F-38042 Grenoble cedex, France
Abstract
The intracavity Laser Absorption Spectroscopy (ICLAS) has been use to observe weak absorption of NO2 and CH4 cooled in a supersonic jet through a slit. By this method, the thermally congested spectrum of the molecules is drastically simplified and analysis becomes possible. On NO2 we report preliminary results in the 13 470 - 14 440 cm-1 energy range where 20 vibronic bands have been observed. On CH4 the VCH = 5 overtone centered at 13 750 cm-1, which is unresolved at room temperature, displays only few lines not yet analysed.
© EDP Sciences 1991