Spectroscopy of ammonia in the range 6626-6805 cm-1: using temperature dependence towards a complete list of lower state energy transitions

被引：25
作者：
Cacciani, P. [1 ]
Cermak, P. [2 ]
Cosleou, J. [1 ]
El Romh, J. [1 ,3 ]
Hovorka, J. [2 ]
Khelkhal, M. [1 ]
机构：
[1] Univ Lille 1, UMR 8523, CNRS, Lab Phys Lasers Atomes & Mol, F-59655 Villeneuve Dascq, France
[2] Comenius Univ, Fac Math Phys & Informat, Dept Expt Phys, Bratislava, Slovakia
[3] Lebanese Univ Hadath, Dept Mol Quantum Mech & Modeling, Beirut, Lebanon
来源：
MOLECULAR PHYSICS | 2014年 / 112卷 / 18期
关键词：
laser spectroscopy; ammonia; high resolution; infrared; (NH3)-N-14; SPECTRA; BAND; ASSIGNMENTS; METHANE; REGION;
D O I：
10.1080/00268976.2014.924653
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Systematic analysis of the temperature dependence of the intensity ratio between already assigned and unassigned transitions enabled the determination of the most probable energy of the lower state of the unassigned transition. Such a procedure has been applied to transitions of (NH3)-N-14 ammonia in the range 6626-6805 cm(-1) between 130 and 300 K. This information is of great interest in the considerable task of the assignment of the complete 1.5 mu m infrared spectral range where combination and overtone vibrational bands are present. 2451 transitions have been observed at different temperatures. For 2133 the line strength and for 1956 transitions the values of lower state energies were derived. Our work was compared with recent Fourier transform study covering a larger energy range (6300-7000 cm(-1)) with smaller temperature range (185-296 K)
引用
收藏
页码：2476 / 2485
页数：10
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