来自SrO A(1)Σ⁺-X(1)Σ⁺跃迁的化学发光的傅里叶变换光谱学。

Fourier Transform Spectroscopy of Chemiluminescence from the SrO A(1)Sigma(+)-X(1)Sigma(+) Transition.

作者信息

Li H, Skelton R, Focsa C, Pinchemel B, Bernath PF

机构信息

Department of Chemistry, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada

出版信息

J Mol Spectrosc. 2000 Sep;203(1):188-195. doi: 10.1006/jmsp.2000.8165.

DOI:10.1006/jmsp.2000.8165

PMID:10930348

Abstract

The A(1)Sigma(+)-X(1)Sigma(+) chemiluminescence spectrum of SrO was observed using a Fourier transform spectrometer. SrO was produced in a Broida-type oven from the Sr + N(2)O reaction. A total of 75 bands from (88)SrO, (87)SrO, and (86)SrO were measured in the range of 7600-13 600 cm(-1) at a resolution of 0.04 cm(-1). The vibrational levels of the ground state were observed up to v" = 12 and over 10 000 rovibrational lines with J as high as 153 were analyzed at a precision of about 0.005 cm(-1). Significantly improved spectral constants for the ground state were obtained by representing the perturbed excited state by term values and by adding the known microwave data and infrared data to our fit. Strong perturbations were observed in the upper A state. The vibrational levels of the A(1)Sigma(+) state were measured up to v' = 8 and some new perturbations are reported. Copyright 2000 Academic Press.

摘要

使用傅里叶变换光谱仪观测了SrO的A(1)Σ⁺-X(1)Σ⁺化学发光光谱。SrO在一个布罗伊达型炉中由Sr与N₂O反应产生。在7600 - 13600 cm⁻¹范围内，以0.04 cm⁻¹的分辨率测量了来自(⁸⁸)SrO、(⁸⁷)SrO和(⁸⁶)SrO的总共75条谱带。观测到基态的振动能级高达v" = 12，并以约0.005 cm⁻¹的精度分析了J高达153的10000多条转动振动态谱线。通过用项值表示受扰激发态并将已知的微波数据和红外数据加入拟合，得到了显著改进的基态光谱常数。在上层A态观测到了强烈的微扰。测量了A(1)Σ⁺态的振动能级高达v' = 8，并报告了一些新的微扰。版权所有2000年学术出版社。