Rb-Ne光学碰撞精细结构分支比  

Fine Structure Branching Ratio for Rb-Ne Optical Collision

作　　者：沈异凡[1] 李万兴[1] 

机构地区：[1]新疆大学物理系,乌鲁木齐830046

出　　处：《量子电子学报》2001年第1期20-23,共4页Chinese Journal of Quantum Electronics

基　　金：国家自然科学基金

摘　　要：光学薄的Ｒｂ蒸汽和低密度Ｎｅ的混合系统被５７０～６００ｎｍ的激光激发，ＲｂＮｅ分子激发态离解到Ｒｂ（５Ｐ１／２）或Ｒｂ（５Ｐ３／２）态，在Ｎｅ密度２～８ｘ１０１７ｃｍ－３范围内，测量了分支比Ｉ（Ｄ１）／Ｉ（Ｄ２），这里Ｉ（Ｄ１）和Ｉ（Ｄ２）分别是ＲｂＤ１和Ｄ２谱线的强度，得到了离解率之比和精细结构转移截面．用共振激发Ｒｂ（５ＰＪ）态，也得到了精细结构转移截面，对结果进行了讨论．An optically thin gaseous mixture of Rb and low-density Ne is excited by 570-600 um of the CW dye laser, The excited RbNe molecule is dissociated into the Rb(5P1/2) or Rb(5P3/2). The branching ratio is defined as I(D1)/I(D2) where I(D1) and I(D2) are measured intensities of the atomic Rb D1 and D2 lines. The branching is determined in the Ne density range 2 to 8 x 1017cm-3. The ratio of the dissociation rates and the fine structure changing cross section are obtained. Fine structrue changing cross section has also been measured for resonant excitation of the Rb 52PJ state, the results are discussed.

关 键 词：光碰撞 精细结构 光学薄 分支比 

分 类 号：O433.3[机械工程—光学工程]