Collisional Line Assignments and Hyperfine Structure Interpretation in Cs22^3△1g State  

Cs22^3△1g态碰撞线归属和超精细结构解释

作　　者：李丹[1] 谢锋[2] 李丽[3] Ergin H.Ahmed A.Marjatta Lyyra 

机构地区：[1]清华大学精密仪器系光子与电子技术研究中心,北京100084 [2]清华大学核能与新能源技术研究院,北京100084 [3]清华大学物理系,北京100084 [4]美国天普大学物理系,费城19122,6082

出　　处：《Chinese Journal of Chemical Physics》2013年第1期13-19,I0003,共8页化学物理学报（英文）

摘　　要：Accurately known energy level structure of the A＇∑u＋b3 IIu complex of states from a recent global de-perturbation of these states has enabled additional assignments of 140 perturbation facilitated infrared-infrared double resonance （PFIIDR） transitions to the 2^3△1g state from collisionally populated intermediate 1 ＋ A Eu levels. Together with the 221 previously observed 2^3△1g←A1∑u＋←X1∑g＋ Eu X Eg double resonance lines [J. Chem. Phys. 128, 204313 （2008）], molecular constants and the Rydberg-Klein-Rees potential energy curve of the 23△1g state have been recalculated （excluding 54 perturbed levels）. The centrifugal distortion constant has been determined and agrees well with the value calculated based on standard empirical formulas. The hyperfine structure of the 23△1g state, which has not resolved in our sub-Doppler excitation spectra of the 23△1g state, has been interpreted with a preliminary simulation.

关 键 词：Cs22^3△1g state Collision-induced energy transfer Hyperfine structure 

分 类 号：O[理学]