SENSITIVE PHOTOACOUSTIC OVERTONE SPECTROSCOPY OF ACETYLENE WITH A MULTIPASS PHOTOACOUSTIC CELL AND A COLOR-CENTER LASER AT 1.5-MU-M

Authors
HORNBERGER C KONIG M RAI SB DEMTRODER W
Citation
C. Hornberger et al., SENSITIVE PHOTOACOUSTIC OVERTONE SPECTROSCOPY OF ACETYLENE WITH A MULTIPASS PHOTOACOUSTIC CELL AND A COLOR-CENTER LASER AT 1.5-MU-M, Chemical physics, 190(2-3), 1995, pp. 171-177
Citations number
23
Categorie Soggetti
Physics, Atomic, Molecular & Chemical
Journal title
Chemical physics → ACNP
ISSN journal
03010104
Volume
190
Issue
2-3
Year of publication
1995
Pages
171 - 177
Database
ISI
SICI code
0301-0104(1995)190:2-3<171:SPOSOA>2.0.ZU;2-J
Abstract
Sensitive Doppler-limited overtone spectra of acetylene in the spectra l region 6300-6400 cm(-1) have been recorded using a single mode NaCl- OH- colour centre laser and a radial resonant photoacoustic multipass cell. We observed some very weak bands which have not been recorded up to now. By comparing our signal strength with direct absorption measu rements of some stronger bands, we were able to calculate a minimum de tectable absorption coefficient alpha(min) approximate to 10(-9) cm(-1 ).