Photoassociation spectra of ultracold(85)Rb2 molecule in 0u+long range state near the 5S(1/2)+5P(1/2)asymptote  

作　　者：赵国栋 苏殿强 姬中华 孟腾飞 赵延霆 肖连团 贾锁堂 

机构地区：[1]State Key Laboratory of Quantum Optics and Quantum Optics Devices,Institute of Laser Spectroscopy,Shanxi University,Taiyuan 030006,China [2]Collaborative Innovation Center of Extreme Optics,Shanxi University,Taiyuan 030006,China

出　　处：《Chinese Physics B》2017年第8期152-156,共5页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.61675120,11434007,and 61378015);the National Natural Science Foundation of China for Excellent Research Team(Grant No.61121064);the Shanxi Scholarship Council of China;the PCSIRT(Grant No.IRT 13076)

摘　　要：We investigate the high resolution photoassociation spectra of ^（85）Rb_2 molecules in 0~＋_u long range state below the（5S_（1/2）＋ 5P_（1/2）） asymptote. The ^（85）Rb atomic samples are trapped in a dark magneto–optical trap（MOT） and prepared in the dark state. With the help of trap loss technique, we obtain considerable photoassociation spectroscopy with rovibrational resolution, some of which have never been observed before. The observed spectrum is fitted by a rigid rotation model, and the rotational constants of ultracold ^（85）Rb_2 molecule in long range 0~＋_u are obtained for different vibrational states. By applying the Le Roy–Bernstein method, we assign the vibrational quantum numbers and derive C_3 coefficient, which is used to obtain the potential energy curve.We investigate the high resolution photoassociation spectra of ^（85）Rb_2 molecules in 0~＋_u long range state below the（5S_（1/2）＋ 5P_（1/2）） asymptote. The ^（85）Rb atomic samples are trapped in a dark magneto–optical trap（MOT） and prepared in the dark state. With the help of trap loss technique, we obtain considerable photoassociation spectroscopy with rovibrational resolution, some of which have never been observed before. The observed spectrum is fitted by a rigid rotation model, and the rotational constants of ultracold ^（85）Rb_2 molecule in long range 0~＋_u are obtained for different vibrational states. By applying the Le Roy–Bernstein method, we assign the vibrational quantum numbers and derive C_3 coefficient, which is used to obtain the potential energy curve.

关 键 词：photoassociation spectroscopy ultracold molecule C3 coefficient 

分 类 号：O561.3[理学—原子与分子物理]