Nonsequential double ionization of nonaligned diatomic molecules N2 and O2

doi:10.1088/1674-1056/22/1/013303

Chin. Phys. B ›› 2013, Vol. 22 ›› Issue (1): 13303-013303.doi: 10.1088/1674-1056/22/1/013303

• ATOMIC AND MOLECULAR PHYSICS • 上一篇下一篇

Nonsequential double ionization of nonaligned diatomic molecules N₂ and O₂

贾欣燕^a, 樊代和^a, 李卫东^b, 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

收稿日期:2012-02-23 修回日期:2012-06-01 出版日期:2012-12-01 发布日期:2012-12-01
基金资助:
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).

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

Received:2012-02-23 Revised:2012-06-01 Online:2012-12-01 Published:2012-12-01
Contact: Li Wei-Dong, Chen Jing E-mail:wdli@sxu.edu.cn; chen_jing@iapcm.ac.cn
Supported by:
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).

摘要/Abstract

摘要： 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.

关键词: nonsequential double ionization, nonaligned diatomic molecules, S-matrix theory, suppression effect

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.

Key words: nonsequential double ionization, nonaligned diatomic molecules, S-matrix theory, suppression effect

中图分类号: (Multiphoton ionization and excitation to highly excited states (e.g., Rydberg states))

33.80.Rv

34.50.Rk (Laser-modified scattering and reactions)

贾欣燕, 樊代和, 李卫东, 陈京. Nonsequential double ionization of nonaligned diatomic molecules N₂ and O₂[J]. Chin. Phys. B, 2013, 22(1): 13303-013303.

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[J]. Chin. Phys. B, 2013, 22(1): 13303-013303.

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Nonsequential double ionization of nonaligned diatomic molecules N₂ and O₂

Nonsequential double ionization of nonaligned diatomic molecules N₂ and O₂

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