Tranchart S, Huet TR, Olafsson A, Destombes J, Naïm S, Fayt A
Centre d'Etudes et de Recherches Lasers et Applications, Université des Sciences et Technologies de Lille, Villeneuve d'Ascq Cedex, F 59 655, France
J Mol Spectrosc. 1999 Aug;196(2):265-273. doi: 10.1006/jmsp.1999.7853.
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(+) laser. The tunable 1.5 W beam was sent through the photoacoustic cell. This windowless longitudinal resonant cell was designed with two lambda/4 buffer volumes at both ends in order to reduce the noise and so to increase the sensitivity (alpha(min) approximately 10(-9) cm(-1)). 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(-1). In addition to the 00(0)6-00(0)0 band of (16)O(12)C(32)S recently identified by Ch. Hornberger, B. Boor, R. Stuber, W. Demtröder, S. Naïm, and A. Fayt, J. Mol. Spectrosc. 179, 237-245, 1996, new weaker bands have been observed: 04(0)5-00(0)0, 1 10(0)3-00(0)0, 10(0)6-00(0)0, 14(0)5-00(0)0, 02(0)6-00(0)0, and 01(1)6-01(1)0, and also the 00(0)6-00(0)0 band of (16)O(12)C(34)S. Effective state parameters are deduced from the band-by-band least-squares fits. The new data have also been introduced in the global analysis which takes into account the l-type resonance and the main anharmonic interactions and so allows a full understanding of the perturbations and the intensity transfers. Copyright 1999 Academic Press.
利用激光光声技术在近红外区域记录了一系列天然氧硫化碳（OCS）的光谱。光源是由氩离子（Ar(+)）激光泵浦的钛宝石激光。可调谐的1.5瓦光束穿过光声池。这个无窗纵向共振池的两端设计有两个四分之一波长缓冲体积，以降低噪声并提高灵敏度（最小吸收系数α约为10^(-9) cm^(-1)）。在90托的压力下，OCS的光谱已在11953 - 12084、12829 - 12890和12998 - 13001 cm^(-1)区域记录下来。除了Ch. Hornberger、B. Boor、R. Stuber、W. Demtröder、S. Naïm和A. Fayt在《分子光谱学杂志》1996年第179卷第237 - 245页最近确定的(16)O(12)C(32)S的00(0)6 - 00(0)0带外，还观测到了新的较弱谱带：04(0)5 - 00(0)0、1 10(0)3 - 00(0)0、10(0)6 - 00(0)0、14(0)5 - 00(0)0、02(0)6 - 00(0)0和01(1)6 - 01(1)0，以及(16)O(12)C(34)S的00(0)6 - 00(0)0带。从逐带最小二乘法拟合中推导出有效状态参数。新数据也已引入全局分析，该分析考虑了l型共振和主要的非谐相互作用，从而能够全面理解微扰和强度转移。版权所有1999年，学术出版社。
