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Chin. Phys. B, 2017, Vol. 26(2): 023204    DOI: 10.1088/1674-1056/26/2/023204
ATOMIC AND MOLECULAR PHYSICS Prev   Next  

Theoretical study on non-sequential double ionization of carbon disulfide with different bond lengths in linearly polarized laser fields

Kai-Li Song(宋凯莉)1, Wei-Wei Yu(于伟威)2, Shuai Ben(贲帅)1, Tong-Tong Xu(徐彤彤)1, Hong-Dan Zhang(张宏丹)1, Pei-Ying Guo(郭培莹)1, Jing Guo(郭静)1
1 Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China;
2 School of Physics and Electronic Technology, Liaoning Normal University, Dalian 116029, China
Abstract  By using a two-dimensional Monte-Carlo classical ensemble method, we investigate the double ionization (DI) process of the CS2 molecule with different bond lengths in an 800-nm intense laser field. The double ionization probability presents a “knee” structure with equilibrium internuclear distance R=2.9245 a.u. (a.u. is short for atomic unit). As the bond length of CS increases, the DI probability is enhanced and the “knee” structure becomes less obvious. In addition, the momentum distribution of double ionized electrons is also investigated, which shows the momentum mostly distributed in the first and third quadrants with equilibrium internuclear distance R=2.9245 a.u. As the bond length of CS increases, the electron momentum becomes evenly distributed in the four quadrants. Furthermore, the energy distributions and the corresponding trajectories of the double-ionized electrons versus time are also demonstrated, which show that the bond length of CS in the CS2 molecule plays a key role in the DI process.
Keywords:  intense laser field      non-sequential double ionization      classical ensemble method      the bond length  
Received:  28 June 2016      Revised:  03 November 2016      Published:  05 February 2017
PACS:  32.80.Rm (Multiphoton ionization and excitation to highly excited states)  
  42.65.Ky (Frequency conversion; harmonic generation, including higher-order harmonic generation)  
  42.65.Re (Ultrafast processes; optical pulse generation and pulse compression)  
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11574117 and11604131).
Corresponding Authors:  Jing Guo     E-mail:  gjing@jlu.edu.cn

Cite this article: 

Kai-Li Song(宋凯莉), Wei-Wei Yu(于伟威), Shuai Ben(贲帅), Tong-Tong Xu(徐彤彤), Hong-Dan Zhang(张宏丹), Pei-Ying Guo(郭培莹), Jing Guo(郭静) Theoretical study on non-sequential double ionization of carbon disulfide with different bond lengths in linearly polarized laser fields 2017 Chin. Phys. B 26 023204

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