The intensity calculation of the gas absorption line by multi-line Voigt fitting

• 来源期刊: 中国煤炭（英文版）
• 关键词: coal mine gas,absorption line intensity,multi-line Voigt fitting,spectrum survey
• 年，卷（期）: 2008,（4）
• 页码范围: 534-537
• 页数: 4页
• 语种: 英文

摘要

Adopted the distribution feedback type (DFB) laser to measure the coal mine gas methane, according to the methane located 1.6 lain nearby 2v3 with a R9 direct ab-sorption spectrum, attraction wire intensity of each line was calculated through the multi-line Voigt fitting. The experimental result indicates that in the obtained four attraction recover of wire, the maximum deviation is 2.7%, and the minimum deviation is 0.02%, other results are all in experimental error scope. This research method may apply in the spectrum survey methane gas density, it has characteristics including high precision, strong selectivity, fast response and so on.