氢化锂（LiH）和氘化锂（LiD）的远红外和中红外发射光谱

Far- and Mid-Infrared Emission Spectroscopy of LiH and LiD.

作者信息

Dulick M, Zhang K, Guo B, Bernath PF

机构信息

National Solar Observatory, National Optical Astronomy Observatories, Tucson, Arizona, 85726

出版信息

J Mol Spectrosc. 1998 Mar;188(1):14-26. doi: 10.1006/jmsp.1997.7430.

DOI:10.1006/jmsp.1997.7430

PMID:9480798

Abstract

High-resolution Fourier transform spectra of LiH and LiD were recorded in the far-infrared region, 100-360 cm-1, and the mid-infrared regions, 800-1200 cm-1 and 2000-3000 cm-1. A total of 261 pure rotational lines and 678 rovibrational lines were measured for the isotopomers 6LiH(D) and 7LiH(D). Molecular constants for the X1Sigma+ ground state in the form of mass-dependent Dunham Yij's and mass-independent Dunham Uij's were determined from a data set of 1476 lines, consisting of our measured line positions and previously reported microwave, millimeter-wave, and infrared lines. An effective internuclear potential for the ground electronic state where the Born-Oppenheimer part is modeled as a parameterized modified-Morse function was also determined from a fit of the data. Copyright 1998 Academic Press.

摘要

在远红外区域（100 - 360厘米⁻¹）以及中红外区域（800 - 1200厘米⁻¹和2000 - 3000厘米⁻¹）记录了LiH和LiD的高分辨率傅里叶变换光谱。对同位素分子⁶LiH(D)和⁷LiH(D)总共测量了261条纯转动谱线和678条振转谱线。根据包含我们测量的谱线位置以及先前报道的微波、毫米波和红外谱线在内的1476条谱线数据集，确定了X¹Σ⁺基态的分子常数，其形式为与质量相关的邓纳姆Yij's和与质量无关的邓纳姆Uij's。还通过对数据的拟合确定了基电子态的有效核间势，其中玻恩 - 奥本海默部分被建模为参数化的修正莫尔斯函数。版权所有1998年学术出版社。