| Rb蒸气中的辐射陷获效应和5P1／2能级有效寿命的测量 |
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| 引用本文： | 王敏,王君,姜家亮,戴康,王倩.Rb蒸气中的辐射陷获效应和5P1／2能级有效寿命的测量[J].新疆大学学报(理工版),2009,26(1):74-77. |
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| 作者姓名： | 王敏 王君 姜家亮 戴康 王倩 |
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| 作者单位： | 新疆大学物理科学与技术学院,新疆,乌鲁木齐,830046
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| 摘 要： | 本文测量了Rb蒸气中（5P1／2）共振能级的有效寿命．圆柱形样品池充入金属Rb，样品池温度在333K-373K之间，在池中产生10^11～10^12cm^-3的Rb原子密度．使用Nd：YAG脉冲激光器（泵浦激光）将Rb原子激发至5P3／2态，测定了转移荧光随时州衰减的曲线．由于辐射陷获效应的存在，有效辐射率是自然辐射率与透射因子的乘积．对5R1／2→5S1／2跃迁荧光曲线的测量，利用最小二乘法拟合及速率方程得到的不同温度下的有效寿命与霍斯坦理论计算得到的相符．
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| 关 键 词： | 有效寿命 辐射陷获 Rb蒸气 |
Radiation Trapping Effect and Measurement of the Rb(5P1/2)Level Effective Radiative Times in the Vapor |
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| WANG Min,WANG Jun,JIANG Jia-liang,DAI Kang,Wang Qian.Radiation Trapping Effect and Measurement of the Rb(5P1/2)Level Effective Radiative Times in the Vapor[J].Journal of Xinjiang University(Science & Engineering),2009,26(1):74-77. |
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| Authors: | WANG Min WANG Jun JIANG Jia-liang DAI Kang Wang Qian |
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| Institution: | (College of Physical, Science and Technology, Xinjiang University, Urumqi Xinjiang 830036, China) |
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| Abstract: | The effective lifetime of the radiative fluorescence of the Rubidium DI lines have been measured in this paper. The Rubidium metal was distilled into the cylinder cell. The temperature of the cell was varied in the range from 333K to 373K,which will produce the rubidium densities of 10^11 - 10^12 cm^-3. Rb atoms were exticted to the 5P3/2 state using a pulsed Nd：YAG laser（pumped laser）. The time-dependent fluorescence of Rubidium D1 lines have been measured. In the presence of radiation trapping effect, the effective radiative rate is equel to the spontaneous radiation rate multiplying the transmission factor. The measured curve of the 5P1/2 - 5S1/2 fluorescence was fitted by rate equation, and the effective lifetimes at different temperature can be obtained. These lifetimes are in agreement with theoretical evaluation from Holstein theory. |
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| Keywords: | effective rate radiation trapping Rb vapor |
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