Cs-N_2光学碰撞精细结构分支比的实验研究  

Experimental fine structure branching ratios for Cs-N_2 optical collision

作　　者：张刚台[1] 穆保霞[1] 袁强华[1] 崔秀花[1] 王淑英[1] 戴康[1] 沈异凡[1] 

机构地区：[1]新疆大学物理系,乌鲁木齐830046

出　　处：《激光杂志》2006年第5期41-42,共2页Laser Journal

基　　金：国家自然科学基金资助项目(编号10264004)

摘　　要：光学薄的Cs蒸气和低密度的N2混合系统被激光激发,激光频率调至Cs共振跃迁的两翼,CsN2分子激发态解离到Cs(6P1/2)或Cs(6P3/2)态,测量了分支比I(D1)/I(D2),这里I(D1)和I(D2)分别为CsD1和D2线的谱线强度,由速率方程分析,得到了解离率之比和精细结构转移截面。用共振激发Cs(6P3/2)态,也得到了精细结构转移截面。对结果进行了讨论。An opticall thin gaseous mixture of Cs and low-density N_2 is excited by the laser.The laser frequence is tuned in the wings of Cs resonance transitions.The excited CsN_2 molecule is dissociated into the Cs(6P_(1/2)) or Cs(6P_(3/2)) states.The branching ratio is defined as I(D_1)/I(D_2) where I(D_1) and I(D_2) are measured intensities of the atomic Cs D_1 and D_2 lines,respectively.The data analysis is based upon a rate-equation.The ratios of the dissociation rates and the fine structure changing cross sect...

关 键 词：激光光谱 光学碰撞 光解离 截面 

分 类 号：O561.3[理学—原子与分子物理]