Investigation of electron localization in harmonic emission from asymmetric molecular ion

doi:10.1088/1674-1056/24/4/043302

中国物理B ›› 2015, Vol. 24 ›› Issue (4): 43302-043302.doi: 10.1088/1674-1056/24/4/043302

• ATOMIC AND MOLECULAR PHYSICS • 上一篇下一篇

Investigation of electron localization in harmonic emission from asymmetric molecular ion

张彩萍, 苗向阳

College of Physics and Information Engineering, Shanxi Normal University, Linfen 041004, China

收稿日期:2014-11-11 修回日期:2014-12-01 出版日期:2015-04-05 发布日期:2015-04-05
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 11404204), the Key Project of Chinese Ministry of Education (Grant No. 211025), the Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20111404120004), the Natural Science Foundation for Young Scientists of Shanxi Province, China (Grant No. 2009021005), and the Innovation Project for Postgraduates of Shanxi Province, China (Grant No. 20133081).

Investigation of electron localization in harmonic emission from asymmetric molecular ion

Zhang Cai-Ping (张彩萍), Miao Xiang-Yang (苗向阳)

College of Physics and Information Engineering, Shanxi Normal University, Linfen 041004, China

Received:2014-11-11 Revised:2014-12-01 Online:2015-04-05 Published:2015-04-05
Contact: Miao Xiang-Yang E-mail:sxxymiao@126.com
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 11404204), the Key Project of Chinese Ministry of Education (Grant No. 211025), the Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20111404120004), the Natural Science Foundation for Young Scientists of Shanxi Province, China (Grant No. 2009021005), and the Innovation Project for Postgraduates of Shanxi Province, China (Grant No. 20133081).

摘要/Abstract

摘要：

We theoretically investigate the electron localization around two nuclei in harmonic emission from asymmetric molecular ion. The results show that the ionization process of electron localized around one nucleus competes with its transfer process to the other nucleus. By increasing the initial vibrational level, more electrons localized around the nucleus D⁺ tend to transfer to the nucleus He²⁺ so that the ionizations of electrons localized around the nucleus He²⁺ increase. In this case, the difference in harmonic efficiency between HeH²⁺ and HeD²⁺ decreases while the difference in harmonic spectral structure increases. The evident minimum can be observed in the harmonic spectrum of HeH²⁺ compared with that in the spectral structure of HeD²⁺, which is due to the strong interference of multiple recombination channels originating from two nuclei. Time-dependent nuclear probability density, electron-nuclear probability density, double-well model, and time-frequency maps are presented to explain the underlying mechanisms.

关键词: high-order harmonic generation, asymmetric molecular ion, vibrational state, electron localization

Abstract:

Key words: high-order harmonic generation, asymmetric molecular ion, vibrational state, electron localization

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

33.80.Rv

31.30.Gs (Hyperfine interactions and isotope effects) 33.20.Tp (Vibrational analysis)

张彩萍, 苗向阳. Investigation of electron localization in harmonic emission from asymmetric molecular ion[J]. 中国物理B, 2015, 24(4): 43302-043302.

Zhang Cai-Ping (张彩萍), Miao Xiang-Yang (苗向阳). Investigation of electron localization in harmonic emission from asymmetric molecular ion[J]. Chin. Phys. B, 2015, 24(4): 43302-043302.

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Investigation of electron localization in harmonic emission from asymmetric molecular ion

Investigation of electron localization in harmonic emission from asymmetric molecular ion

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