摘要
目的研究Cs(6P3/2)+Cs(6P3/2)→Cs(nLJ=8S1/2,4F5/2,4F7/2)+Cs(6S1/2)碰撞能量合并过程。方法利用一台单模半导体激光器共振激发6P3/2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,吸收线调至6P3/2→8S1/2跃迁,并可平行于泵浦激光束移动。由激发态原子密度和谱线的荧光强度比得到碰撞能量合并的截面。结果碰撞转移到8S1/2,4F5/2和4F7/2的截面分别是(5.43±1.56)×10-16cm2,(4.89±1.16)×10-16cm2和(6.17±1.60)×10-16cm2。结论计算结果是准确的并与其它实验结果进行了比较。
Aim An experimental study into cesium energy pooling collision, Cs（ 6P3/2 ）＋ Cs （ 6P3/2 ）→Cs（ nLJ= 8S1/2 ,4F5/2 ,4F7/2 ）＋Cs（ 6S1/2 ） ,has been carried out in a cell. Methods A single mode semiconductor laser is used to excite the 6Pa/2 state, the other single mode laser antiparallel to pumping laser is used as absorption line to detect excited atomic intensity and its spatial distribution, with absorption line transiting from 6Pal2 to 8S1/2 and parallel to the movement of pumping laser. The cross section of energy pooling collisions is obtained by the ratio of the excited atomic density to fluorescence intensity of the spectral line. Results The cross sections of 8S1/2,4F5/2 and 4F7/2 are （5.43±1.56）×10^-16cm2,（4.89±1.16）×10^-16cm2 and （6.17±1.60）×10^-16cm2 respectively.Conclusion Compared with other test results, the calculation results are exact.
出处
《宝鸡文理学院学报（自然科学版）》
CAS
2009年第2期47-49,共3页
Journal of Baoji University of Arts and Sciences(Natural Science Edition)
基金
宝鸡文理学院科研基金资助项目(ZK0698)
关键词
碰撞能量转移
截面
速率系数
荧光
CS
collisional energy transfer
cross section
rate coefficient
fluoreseence
Cs
