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题名: Direct multi-photon ionizations of H-2(+) in intense laser fields
作者: He, Hai-Xiang1, 2;  Lu, Rui-Feng3;  Zhang, Pei-Yu1;  Han, Ke-Li1;  He, Guo-Zhong1
刊名: JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
发表日期: 2012-04-28
DOI: 10.1088/0953-4075/45/8/085103
卷: 45, 期:8
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Optics ;  Physics, Atomic, Molecular & Chemical
研究领域[WOS]: Optics ;  Physics
英文摘要: We have discussed a weak ionization channel characterized by the kinetic energy release spectra of the protons from Coulomb explosion with the sum energy over 10 eV from a hydrogen molecular ion for various vibrational states in infrared pulses. After Franck-Condon averaging of the contributions for various vibrational states, a 'shoulder'-like cutoff structure has been obtained which is consistent with the experiment. For longer pulses, a multi-peak structure is obvious for the upsilon = 0 state and attosecond extreme-ultraviolet pulses were adopted to search the essential physical dynamics. The reproductions of the kinetic energy release spectra from extreme-ultraviolet light indicate that the high kinetic energies of the protons must be due to the direct multi-photon ionizations. The origin of the multi-peak structure has also been investigated by the extreme-ultraviolet pulses. Time-dependent spectra reveal the nuclear wavepacket motion and the time region when charge-resonance-enhanced ionization takes place. Competitions between direct multi-photon ionizations and charge-resonance-enhanced ionizations have also been discussed for various intensities and pulse durations for the upsilon = 0 state.
关键词[WOS]: DYNAMICS ;  DISSOCIATION ;  MOLECULES ;  PULSES ;  BOND
语种: 英语
WOS记录号: WOS:000302778700006
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138048
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
2.Chinese Acad Sci, China & Grad Sch, Beijing 10039, Peoples R China
3.Nanjing Univ Sci & Technol, Dept Appl Phys, Nanjing 210094, Jiangsu, Peoples R China

Recommended Citation:
He, Hai-Xiang,Lu, Rui-Feng,Zhang, Pei-Yu,et al. Direct multi-photon ionizations of H-2(+) in intense laser fields[J]. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS,2012,45(8).
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