| CdH分子基态X~2∑~+和激发态A~2П光谱和寿命测量 |
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| 引用本文： | 吴小光,张培林,赵朔嫣.CdH分子基态X~2∑~+和激发态A~2П光谱和寿命测量[J].光学学报,1993,13(9):769-774. |
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| 作者姓名： | 吴小光 张培林 赵朔嫣 |
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| 作者单位： | 清华大学现代应用物理系 北京100084
(吴小光，张培林)，清华大学现代应用物理系 北京100084(赵朔嫣) |
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| 基金项目： | 国家自然科学基金;清华大学科学基金 |
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| 摘 要： | 采用一束激光为泵浦光另一束激光为探测光的方法,获得CdH分子A~2Π态和X~2∑~+态之间跃迁产生的具有转动结构的多个荧光谱和激发谱带.对荧光的时间分辨研究,给出A~2Π态寿命τ_0=59.5±2.3ns,对A~2Π(v=0)态Cd原子的碰撞猝灭截面为(1.31±0.03)×10~(-15)cm~2;X~2∑~+态寿命τ_0=61.0±4.6μs,引起X~2∑~+(v=0)态寿命衰减的碰撞截面为(1.1±0.1)×10~(-18)cm~2.
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| 关 键 词： | 激发谱 荧光谱 寿命 CdH |
| 收稿时间： | 1993/3/7 |
The spectrum and lifetime of X2∑+and A2∏ states of CdH molecule |
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| WU Xiaoguang ZHANG Peilin ZHAO Shuoyan.The spectrum and lifetime of X2∑+and A2∏ states of CdH molecule[J].Acta Optica Sinica,1993,13(9):769-774. |
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| Authors: | WU Xiaoguang ZHANG Peilin ZHAO Shuoyan |
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| Abstract: | Using pump-and-probe methods of laser spectroscopy, we observed several fluorescence and excitation bands with rotational structure of radiative transition between the A2∏ and X2∑+ states of the CdH molecule. Based on the study of time-resolution of the fluorescence, the radiative lifetime of τ0=59.5±2.3 ns for the A2∏ state, and the cross-section of (1.31±0.03)×10-15 cm2 for quenching the A2∏(v=0) state by Cd collisions; τ0=61.0±4.6 μs for the X2∑+ state and the cross-section of (1.1±0.1)×10-18 cm2 for CdH molecule dissociation by Cd collisions are estimated. |
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| Keywords: | excitation spectrum fluorescence spectrum life time CdH |
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