| Rb（5PJ）＋Rb（5PJ）→Rb（5JS）＋Rb（nl=5D，7S）碰撞能量合并 |
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| 引用本文： | 穆保霞,王淑英,崔秀花,张刚台,袁强华,戴康,沈异凡.Rb（5PJ）＋Rb（5PJ）→Rb（5JS）＋Rb（nl=5D，7S）碰撞能量合并[J].光谱学与光谱分析,2006,26(9):1577-1580. |
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| 作者姓名： | 穆保霞 王淑英 崔秀花 张刚台 袁强华 戴康 沈异凡 |
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| 作者单位： | 穆保霞（新疆大学物理系,新疆,乌鲁木齐,830046）;王淑英（新疆大学物理系,新疆,乌鲁木齐,830046）;崔秀花（新疆大学物理系,新疆,乌鲁木齐,830046）;张刚台（新疆大学物理系,新疆,乌鲁木齐,830046）;袁强华（新疆大学物理系,新疆,乌鲁木齐,830046）;戴康（新疆大学物理系,新疆,乌鲁木齐,830046）;沈异凡（新疆大学物理系,新疆,乌鲁木齐,830046） |
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| 基金项目： | 国家自然科学基金（10264004）资助项目 |
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| 摘 要： | 研究了Rb(5PJ)+Rb(5PJ)→Rb(nlJ')+Rb(5S)碰撞能量合并过程,利用单模半导体激光器分别共振激发Rb原子的5P1/2或5P3/2态,利用另一与泵浦激光束反向平行的单模激光束作为吸收线探测激发态原子密度及其空间分布,吸收线分别调至5P1/2→5D3/2和5P3/2→7S1/2跃迁.由激发态原子密度和谱线荧光比得到碰撞能量合并过程的截面,对5P3/2激发,碰撞转移得到5D5/2,5D3/2和7S1/2的截面分别是(1.32士0.59)×10-14,(1.18士0.53)×10-14和(3.21士1.44)×10-15cm2;对5P1/2激发,碰撞转移到5D5/2和5D3/2的截面分别是(6.57士2.96)×10-15和(5.90士2.66)×10-15cm2.与其他的实验结果进行了比较.
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| 关 键 词： | 碰撞能量合并 Rb 激发态密度 荧光 截面 |
| 文章编号： | 1000-0593（2006）09-1577-04 |
| 收稿时间： | 2005-05-09 |
| 修稿时间： | 2005-08-28 |
Energy-pooling collisions of rubidium atoms: Rb (5P(J)) + Rb (5P(J))--> Rb (5S) + Rb (nl = 5D,7S)] |
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| MU Bao-xia,WANG Shu-ying,CUI Xiu-hua,ZHANG Gang-tai,YUAN Qiang-hua,DAI Kang,SHEN Yi-fan.Energy-pooling collisions of rubidium atoms: Rb (5P(J)) + Rb (5P(J))--> Rb (5S) + Rb (nl = 5D,7S)][J].Spectroscopy and Spectral Analysis,2006,26(9):1577-1580. |
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| Authors: | MU Bao-xia WANG Shu-ying CUI Xiu-hua ZHANG Gang-tai YUAN Qiang-hua DAI Kang SHEN Yi-fan |
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| Institution: | Department of Physics, Xinjiang University, Urumqi 830046, China. |
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| Abstract: | An experimental study of rubidium energy pooling collisions, Rb(5P(J)) + Rb(5P(J))-->Rb(nlJ') + Rb(5S), at thermal energies, was carried out in a cell. Atoms were excited to either the 5P 1/2 or 5P 3/2 state using a single-mode diode laser. The excited atom density and spatial distribution were mapped by monitoring the absorption of a counter-propagating single-mode diode laser beam, tuned to either 5P 1/2-->5D 3/2 or 5P 3/2-->7S 1/2 transition, which could be translated parallel to the pump beam. The excited atom densities were combined with the measured fluorescence ratios to determine cross sections for the rubidium energy pooling process. For 5P 3/2 excitation the cross sections for nlJ' being 5D 5/2, 5D 3/2, and 7S 1/2 are (1.32+/-0.59) x 10(-14), (1.18+/-0.53) x 10(-14) and (3. 21+/-1. 44) x 10(-15) cm2, respectively. For 5P 1/2 excitation the cross sections for nlJ' being 5D 5/2 and 5D 3/2 are (6.57+/-2.96) x 10(-15), and (5.90+/-2.66) x 10(-15) cm2, respectively. The results were compared with those of other experiments. |
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| Keywords: | Energy-pooling collision Rb Excited-atom density Fluorescence Cross section |
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