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Chin. Phys. B, 2013, Vol. 22(9): 093301    DOI: 10.1088/1674-1056/22/9/093301
ATOMIC AND MOLECULAR PHYSICS Prev   Next  

High resolution photoassociation spectra of an ultracold Cs2 long-range 0u+ (6S1/2+6P1/2) state

Chen Peng, Li Yu-Qing, Zhang Yi-Chi, Wu Ji-Zhou, Ma Jie, Xiao Lian-Tuan, Jia Suo-Tang
State Key Laboratory of Quantum Optics and Quantum Optics Devices, Laser Spectroscopy Laboratory, Shanxi University, Taiyuan 030006, China
Abstract  In this paper, ultracold cesium molecules are formed through photoassociation technology, which is carried out in a magneto-optical trap. High resolution photoassociaion spectra with the rotational progressions up to J=7 are obtained. Three rovibrational levels of the long-range 0u+ state of Cs2 below the (6S1/2+6P1/2) dissociation limit are specifically investigated. By fitting their binding energy intervals to the non-rigid rotational model, the rotational constant of the long-range 0u+ state is determined. A proportional dependence of the value of the rotational constant on the vibrational quantum number is demonstrated.
Keywords:  ultracold molecules      photoassociation      trap-loss spectrum      long-range molecular coefficient  
Received:  25 March 2013      Revised:  30 May 2013      Published:  26 July 2013
PACS:  33.20.Vq (Vibration-rotation analysis)  
  33.15.Pw (Fine and hyperfine structure)  
  31.10.+z (Theory of electronic structure, electronic transitions, and chemical binding)  
Fund: Project supported by the National Basic Research Program of China (Grant No. 2012CB921603), the National High Technology Research and Development Program of China (Grant No. 2011AA010801), the National Natural Science Foundation of China (Grant Nos. 61008012 and 10934004), the International Science and Technology Cooperation Program of China (Grant No. 2001DFA12490), the Project for Excellent Research Team of the National Natural Science Foundation of China (Grant No. 61121064), and the New Teacher Fund of the Ministry of Education of China (Grant No. 20101401120004).
Corresponding Authors:  Ma Jie     E-mail:  mj@sxu.edu.cn

Cite this article: 

Chen Peng, Li Yu-Qing, Zhang Yi-Chi, Wu Ji-Zhou, Ma Jie, Xiao Lian-Tuan, Jia Suo-Tang High resolution photoassociation spectra of an ultracold Cs2 long-range 0u+ (6S1/2+6P1/2) state 2013 Chin. Phys. B 22 093301

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