NO分子A^2∑(v′=1)→X^2 ∏ (v”=1～ 11)跃迁的激光诱导荧光光谱(英文)  

Study on the Fluorescence Spectrum of NO Molecule for A^2∑(v′=1)→X^2∏(v"=1～11) Transition

作　　者：张贵银[1] 张连水[1] 杨晓冬[1] 赵晓辉[1] 李裔[1] 

机构地区：[1]河北大学物理科学与技术学院

出　　处：《光电子．激光》2003年第7期756-759,共4页Journal of Optoelectronics·Laser

基　　金：SupportedbytheNaturalScienceFoundationofHebeiProvince(1 0 2 0 90 );TheYouthScientificResearchFoundationofNorthChinaElectricPowerUniversity

摘　　要：用Nd :YAG激光器泵浦光学参量发生放大器做激发源 ,利用激光诱导荧光光谱技术得到NO分子在 2 0 0～ 370nm范围内的荧光光谱 ,谱线峰值归属于A2 (v′=1)→X2 ∏ (v” =1,3～ 11)跃迁 ,用最小二乘法拟合获得NO分子X2 ∏态振动常数 ,计算出平衡位置的力常数k。通过测量NO分子在不同气压下A2 →X2 ∏跃迁的时间分辨谱 ,得到A2 (v′=1)态的自然寿命为 180ns。结果可为用激光诱导荧光光谱技术探测大气污染物NO分子提供理论及实验参考。Two photon laser induced fluorescence (TP LIF) spectrum of NO molecule was obtained in the spectral region 200～370 nm with excitation wavelength of 429.4 nm.The fluorescence spectrum forms a progression by A 2(v′=1)→X 2∏(v'=1,3～11) transition in the observation wavelength range.Some molecule constants of the ground state about NO molecule were calculated.The spontaneous radiant lifetime of NO molecule which is in the excited state A 2 was measured by fitting the curve of lifetime versus pressure.It is about 180 ns.The results can provide good infromation for the detection of NO molecule.

关 键 词：双光子 激光诱导 荧光光谱 NO 辐射寿命 分子常数 

分 类 号：O433.5[机械工程—光学工程]