High-Resolution Laser Photoacoustic Spectroscopy of OCS in the 12 000–13 000 cm−1 Region

✍ Scribed by S. Tranchart; I. Hadj Bachir; T.R. Huet; A. Olafsson; J.-L. Destombes; S. Naı̈m; A. Fayt

• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 216 KB
• Volume: 196
• Category: Article
• ISSN: 0022-2852
• DOI: 10.1006/jmsp.1999.7853

✦ Synopsis

A spectrum of natural OCS has been recorded in the near-infrared region using the laser photoacoustic technique. The source is a titanium-sapphire laser pumped by an Ar ϩ laser. The tunable 1.5 W beam was sent through the photoacoustic cell. This windowless longitudinal resonant cell was designed with two /4 buffer volumes at both ends in order to reduce the noise and so to increase the sensitivity (␣ min Ϸ 10 Ϫ9 cm Ϫ1 ). The spectrum of OCS, at a pressure of 90 Torr, has been recorded in the regions 11 953-12 084, 12 829 -12 890, and 12 998 -13 001 cm Ϫ1 . In addition to the 00 0 6 -00 0 0 band of 16 O 12 C 32 S recently identified by Ch.