物理学报2011，Vol.60Issue(5)：250-259,10.
基于OH自由基A2∑+→X2∏r电子带系发射光谱的温度测量技术
Emission spectra of OH radical (A2∑+→X2∏r ) and its application on high temperature gas
彭志敏 1丁艳军 1杨乾锁 2姜宗林2
作者信息
- 1. 清华大学热能系,电力系统与发电设备控制与仿真国家重点实验室,北京,100084
- 2. 中国科学院力学研究所,高温气体动力学重点实验室,北京,100190
- 折叠
摘要
Abstract
Based on the inherent molecular structure characteristics of the OH radicals, the energy level distribution, the transition frequency and Einstein spontaneous emission transition probability are systematically analyzed and numerically studied. Meanwhile, combined with the spectra experiments, the natural broadening, collision broadening, Doppler broadening and instrumental broadening effects on spectral line shape are analyzed. The dependence of the spectral profile on the rotational temperature, the vibrational temperature, and the spectral function are numerically explored in certain ranges. The corresponding numerical results are also discussed for the emission spectra thermometry, which provides a theoretical basis for the emission thermometry. In experimental, the emission spectra of OH ( A2∑+ →X2∏r ) system of the hydrogen flames are recorded by the optical multi-channel analyzer and studied. By the fitting of the experimental spectra to the numerically calculated spectra, the corresponding rotational and vibrational temperatures of the hydrogen flames are determined, respectively.关键词
发射光谱/转动温度/振动温度/自发发射爱因斯坦跃迁概率Key words
emission spectroscopy/ rotational temperature/ vibrational temperature/ Einstein spontaneous emission transition probability引用本文复制引用
彭志敏,丁艳军,杨乾锁,姜宗林..基于OH自由基A2∑+→X2∏r电子带系发射光谱的温度测量技术[J].物理学报,2011,60(5):250-259,10.
