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Theoretical approach to the study of vibrational effects on strong field ionization of molecules with alignment-dependent tunneling ionization rates |
| Zhang Mei-Xia (张美霞)a b c, Yan Bing (闫冰)a b, Yang Yu-Jun (杨玉军)a b, Luo Si-Zuo (罗嗣佐)a b, Zhu Rui-Han (朱瑞晗)a b d, Yang Xue (杨雪)a b e, Ding Da-Jun (丁大军)a b |
a Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China;
b Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun 130012, China;
c College of Physics, Liaoning University, Shenyang 110036, China;
d School of Science, Changchun University of Science and Technology, Changchun 130012, China;
e College of Science, Jilin Institute of Chemical Technology, Jilin 130012, China |
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Abstract The tunneling ionization rates of vibrationally excited N2 molecules at the ground electronic state are calculated using molecular orbital Ammosov-Delone-Krainov theory considering R-dependence. The results show that molecular alignment significantly affects the ionization rate, as the rate is mainly determined by the electron density distribution of the highest occupied molecular orbital. The present work indicates that the ratios of alignment-dependent rates of different vibrational levels to that of the vibrational ground level increase for the aligned N2 at the angle θ= 0°, and suggests that the alignment-dependent tunneling ionization rates can be used as a diagnostics for the influence of vibrational excitation on the strong field ionization of molecules.
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Received: 13 February 2015
Revised: 02 April 2015
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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42.50.Hz
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(Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift)
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| Fund: Project supported by the National Basic Research Program of China (Grant No. 2013CB922200) and the National Natural Science Foundation of China (Grant Nos. 11034003 and 11127403). |
Corresponding Authors:
Ding Da-Jun
E-mail: dajund@jlu.edu.cn
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Cite this article:
Zhang Mei-Xia (张美霞), Yan Bing (闫冰), Yang Yu-Jun (杨玉军), Luo Si-Zuo (罗嗣佐), Zhu Rui-Han (朱瑞晗), Yang Xue (杨雪), Ding Da-Jun (丁大军) Theoretical approach to the study of vibrational effects on strong field ionization of molecules with alignment-dependent tunneling ionization rates 2015 Chin. Phys. B 24 093302
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