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Dissociation and Ionization of Quasi-Periodically Vibrating H-2(+) in Intense Few-Cycle Mid-Infrared Laser Fields
Jiang, Shicheng1; Yu, Chao1; Yuan, Guanglu1; Wu, Tong1; Lu, Ruifeng1,2
刊名SCIENTIFIC REPORTS
2017-02-06
DOI10.1038/srep42086
7
收录类别SCI
文章类型Article
WOS标题词Science & Technology
类目[WOS]Multidisciplinary Sciences
研究领域[WOS]Science & Technology - Other Topics
关键词[WOS]RESONANCE-ENHANCED IONIZATION ; DIATOMIC MOLECULAR-IONS ; COULOMB EXPLOSION ; MULTIPHOTON IONIZATION ; HARMONIC-GENERATION ; PULSES ; DYNAMICS ; WAVEPACKET ; MODEL
英文摘要Using quantum mechanics calculations, we theoretically study the dissociation and ionization dynamics of the hydrogen-molecule ion in strong laser fields. Having prepared the nuclear wave packet of H-2(+) in a specific vibrational state, a pump laser is used to produce a vibrational excitation, leading to quasi-periodical vibration without ionization. Then, a time-delayed few-cycle laser is applied to trigger the dissociation or ionization of H-2(+). Both the time delay and the intensity of the probe laser alter the competition between dissociation and ionization. We also explore the dependence of kinetic-energy release spectra of fragments on the time delay, showing that the channels of above-threshold dissociation and below-threshold dissociation are opened and closed periodically. Also, dissociation from different channels is influenced by nuclear motion. The dissociation mechanism has been described in detail using the Floquet picture. This work provides a useful method for steering the electronic and nuclear dynamics of diatomic molecules in intense laser fields.
语种英语
WOS记录号WOS:000393438500001
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文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/151898
专题中国科学院大连化学物理研究所
作者单位1.Nanjing Univ Sci & Technol, Dept Appl Phys, Nanjing 210094, Jiangsu, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
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Jiang, Shicheng,Yu, Chao,Yuan, Guanglu,et al. Dissociation and Ionization of Quasi-Periodically Vibrating H-2(+) in Intense Few-Cycle Mid-Infrared Laser Fields[J]. SCIENTIFIC REPORTS,2017,7.
APA Jiang, Shicheng,Yu, Chao,Yuan, Guanglu,Wu, Tong,&Lu, Ruifeng.(2017).Dissociation and Ionization of Quasi-Periodically Vibrating H-2(+) in Intense Few-Cycle Mid-Infrared Laser Fields.SCIENTIFIC REPORTS,7.
MLA Jiang, Shicheng,et al."Dissociation and Ionization of Quasi-Periodically Vibrating H-2(+) in Intense Few-Cycle Mid-Infrared Laser Fields".SCIENTIFIC REPORTS 7(2017).
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