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## ENERGY TRANSFER IN COLLISIONS BETWEEN TWO EXCITED CESIUM ATOMS

SHEN YI-FAN, LI WAN-XING
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• #### 摘要

用激光抽运基态Cs2分子,通过预离解或碰撞转移,由一部分的激发态Cs2产生Cs原子6P,5D激发态。测量了Cs(5D)+Cs(6P)→Cs(7DJ)+Cs(6S)碰撞激发能量转移截面σ(7DJ),以及Cs(7DJ)+Cs(6S)→除Cs(7D)外的态的截面σtr。结果是,对于J=5/2,3/2,σ(7DJ)(以

#### Abstract

Cesium molecules are pumped by a CW dye laser. Some of the excited molecules then pre-dissociate or collisionally transfer excitation to produce excited atoms at the 5D and 6P levels. The cross sections (in units of 10-14cm2) for the excitation transfer process Cs(6P)+Cs(5D) →Cs(7DJ)+Cs(6S)for J being 5/2 and 3/2 are 5. 4 ± 50% and 4. 9 ± 50%, respectively. The cross sections (in units of 10-14cm2) for the excitation transfer out of the 7D doublet [i. e. , Cs(7DJ)+Cs(6S) →states other than Cs(7D)] for J being 5/2 and 3/2 are 1. 6 ±50% and 0. 34±50%, respectively. To obtain these cross sections, the intensities of 7D and 5D fluorescence emissions and the 6P atom density are measured by using the absorption equivalent width technique. The results are discussed in eomparison with those of other experiments.

#### 作者及机构信息

###### 1. 新疆大学物理系,乌鲁木齐830046
• 基金项目: 国家自然科学基金

#### 施引文献

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##### 出版历程
• 收稿日期:  1992-12-15
• 刊出日期:  2005-07-10

## 激发态铯原子间的碰撞能量转移

• 1. 新疆大学物理系,乌鲁木齐830046
基金项目: 国家自然科学基金

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