文献类型：期刊文献

中文题名：Cs-K混合蒸气中Cs(8D)+K(4S)碰撞能量转移

英文题名：Collisional Energy Transfer for Cs(8D)+K(4S) in Cs-K Vapor Mixture

作者：沈异凡[1];沈晓燕[2]

机构：[1]新疆大学物理系,新疆乌鲁木齐830046;[2]华东理工大学化学系,上海200237

年份：2004

卷号：21

期号：1

起止页码：11

中文期刊名：量子电子学报

外文期刊名：Chinese Journal of Quantum Electronics

收录：CSTPCD;;北大核心:【北大核心2000】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金资助项目(10264004)

语种：中文

中文关键词：碰撞能量合并逆过程;REP;速率系数;光谱学;激发态原子;Cs;K

外文关键词：spectroscopy; excited atoms; reverse energy pooling; rate coefficient

摘要：在Cs-K混合蒸气中,两步激发Cs原子到8D态,观察了Cs(8D)+K(4S)→Cs(5D)+K(4P)碰撞能量合并逆过程(REP,reverse energy pooling)。应用双调制技术探测K(4P)原子发射的荧光,基态K原子密度用光学吸收方法测量。得到了REP速率系数,讨论了其它过程对速率系数的影响。
Using two steps excitation of the cesium 8D atomic level in a cesium-potassium vapor mixture, we observed the reverse heteronuclear energy-pooling collision Cs(8D)+K(4S) →Cs(5D)+K(4P) at thermal energy. A double-modulation technique has been used to select the fluorescence contributions at the K(4PJ) exit channels due only to the above reactions. The ground state potassium atom density was measured by the absorption of line from a K hollow-cathode lamp. The measured density and fluorescence intensities have been used to obtain reverse energy-pooling rate coefficients. The contribution to the rate coefficients from other processes is discussed.