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Nonsequential double ionization of nonaligned diatomic molecules N2 and O2 |
| Jia Xin-Yan (贾欣燕)a, Fan Dai-He (樊代和)a, Li Wei-Dong (李卫东)b, Chen Jing (陈京)c d |
a Quantum Optoelectronics Laboratory, Southwest Jiaotong University, Chengdu 610031, China;
b Institute of Theoretical Physics and Department of Physics, Shanxi University, Taiyuan 030006, China;
c HEDPS, Center for Applied Physics and Technology, Peking University, Beijing 100084, China;
d Institute of Applied Physics and Computational Mathematics, Beijing 100088, China |
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Abstract Nonsequential double ionization (NSDI) processes of nonaligned diatomic molecules N2 and O2 are studied using the S-matrix theory. Our results show that the NSDI process significantly depends on the molecular symmetry and structure. The ratio of NSDI rate to single ionization rate as a function of the field intensity is obtained. It is found that N2 behaves closely to its companion atom Ar in the ratios over the entire intensity range, while O2 exhibits an obvious suppression effect, which is qualitatively consistent with the experiment.
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Received: 23 February 2012
Revised: 01 June 2012
Accepted manuscript online:
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PACS:
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33.80.Rv
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(Multiphoton ionization and excitation to highly excited states (e.g., Rydberg states))
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34.50.Rk
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(Laser-modified scattering and reactions)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11074026, 11074155, and 11104225), the NCET of the Ministry of Education of China (Grant No. NCET-08-0883), and the National Basic Research Program of China (Grant No. 2011CB808100). |
Corresponding Authors:
Li Wei-Dong, Chen Jing
E-mail: wdli@sxu.edu.cn; chen_jing@iapcm.ac.cn
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Cite this article:
Jia Xin-Yan (贾欣燕), Fan Dai-He (樊代和), Li Wei-Dong (李卫东), Chen Jing (陈京) Nonsequential double ionization of nonaligned diatomic molecules N2 and O2 2013 Chin. Phys. B 22 013303
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