基于分子转-振光谱精细结构的火焰温度遥测方法  

Remote Measurement of Flame Temperature Based on Fine Structures of Molecular Rotation-Vibration Spectra

作　　者：刘二平[1] 刘志明[2] 李海平[2] 张玉广[2] 杨长明[2] 栗秋芳[2] 李崇[2] 商丽娟[2] 洪晔[2] 

机构地区：[1]中国人民解放军海军驻保定地区航空军事代表室,河北省保定市071000 [2]中国船舶重工集团公司第七一八研究所

出　　处：《光谱实验室》2011年第6期2855-2861,共7页Chinese Journal of Spectroscopy Laboratory

摘　　要：燃烧火焰温度是固体推进剂等重要参数,本文研究了基于分子转-振光谱精细结构的火焰温度遥测方法。根据分子转-振光谱线的展宽机制,研究了分子谱线线型。结合朗伯-比耳吸收定律,去除谱线中心受大气低温气体吸收影响较大的数据点后,利用谱线两翼的数据点进行谱线线型拟合,利用分子转-振光谱精细结构温度遥测方法将经拟合修正后数据反演火焰温度,使得分子转-振光谱精细结构法遥测的火焰温度更为准确。采用加拿大Bomem公司的MR-154傅里叶变换红外光谱仪测量了酒精灯火焰红外发射谱,并根据火焰中水汽的转-振光谱精细结构反演了酒精灯火焰温度为415℃,位于酒精灯火焰温度范围(400—500℃)之内。The temperature is a very important parameter of solid propellant.The method of remote measuring flame temperature by the fine structures of molecular rotation-vibration spectra was studied.Some line shapes of molecular spectra were analyzed based on broadening principle of line shapes for molecular spectra.According to Beer-Lambert＇s law,the data points which were influenced by absorption of cold gas in air were removed.Then,the fit of spectral line shape was performed using the data points of two sides of spectra.The flame temperature was retrieved using data fitted by remote method for fine structures of molecular rotation-vibration spectra.The infrared emission spectra of alcohol burner flame were measured with a Canada Momem MR-154 FTIR spectrometer.The calculated temperature was 415℃ within the temperature range of alcohol burner（400—500℃）.

关 键 词：火焰 温度测量 分子转-振光谱 傅里叶变换红外光谱法 光谱线型 

分 类 号：O657.33[理学—分析化学]