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   

  1. 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   

  1. 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: 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)