| NO分子A2∑(v′＝1)→X2∏(v＂＝1～11)跃迁的激光诱导荧光光谱 |
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| 引用本文： | 张贵银,张连水,杨晓冬,赵晓辉,李裔.NO分子A2∑(v′＝1)→X2∏(v＂＝1～11)跃迁的激光诱导荧光光谱[J].光电子．激光,2003,14(7). |
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| 作者姓名： | 张贵银 张连水 杨晓冬 赵晓辉 李裔 |
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| 作者单位： | 1. 河北大学物理科学与技术学院,河北,保定,071002;华北电力大学,河北,保定,071003
2. 河北大学物理科学与技术学院,河北,保定,071002 |
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| 基金项目： | 河北省自然科学基金，The Youth Scientific Research Foundation of North China Electric Power University |
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| 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200～370 nm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180 ns.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.
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| 关 键 词： | 双光子 激光诱导荧光光谱 辐射寿命 分子常数 |
Study on the Fluorescence Spectrum of NO Molecule for A2∑(v′＝1)→X2∏(v＂＝1～11) Transition |
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| Abstract: | 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 A2∑(v′＝1)→X2∏(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 A2∑ 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. |
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| Keywords: | NO two-photon fluorescence spectrum NO molecule radiation lifetime molecule constants |
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