Lees RM, Xu LH
Department of Physics, University of New Brunswick, Fredericton, New Brunswick, E3B 5A3, Canada
J Mol Spectrosc. 1999 Aug;196(2):220-234. doi: 10.1006/jmsp.1999.7876.
Progress in the analysis of the infrared spectrum of CH(3)OH in the 930-1450 cm(-1) region has led to assignments, confirmations, or new insights for a number of far-infrared laser (FIRL) transition systems optically pumped by CO(2) lasers. Many of the systems involve FIRL transitions among the CO-stretching, CH(3)-rocking, OH-bending, and CH(3)-deformation vibrational modes, giving useful information on the torsion-rotation structure of the methanol vibrational energy manifold. Some anomalies and mysteries concerning the identity of the lasing levels have been resolved, but several new ones have arisen. Altogether, 45 CH(3)OH IR-pump/FIR-laser systems are examined in light of the new spectroscopic information; about half of the system assignments are new and half have been previously reported in the literature and are here confirmed, extended, or revised. Copyright 1999 Academic Press.
在930 - 1450厘米⁻¹区域对CH(3)OH红外光谱分析取得的进展，为许多由CO(2)激光光泵浦的远红外激光（FIRL）跃迁系统带来了能级归属、确认或新的见解。许多系统涉及CO伸缩、CH(3)摇摆、OH弯曲和CH(3)变形振动模式之间的FIRL跃迁，为甲醇振动能量多重态的扭转 - 转动结构提供了有用信息。一些关于激光能级身份的异常和谜团已经得到解决，但又出现了一些新的问题。根据新的光谱信息，总共研究了45个CH(3)OH红外泵浦/FIR激光系统；大约一半的系统归属是新的，另一半此前已在文献中报道，在此予以确认、扩展或修订。版权所有1999年学术出版社。
