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Field modulation of Rydberg-state populations of NO studied by femtosecond time-resolved photoelectron imaging
Wang, Bingxing1,2; Liu, Benkang1,2; Wang, Yanqiu2; Wang, Li2
刊名PHYSICAL REVIEW A
2010-04-01
DOI10.1103/PhysRevA.81.043421
81期:4
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
关键词[WOS]SMALL MOLECULES ; LASER-PULSES ; SPECTROSCOPY ; IONIZATION ; CHEMISTRY ; SERIES
英文摘要Femtosecond time-resolved velocity map imaging combined with multiphoton ionization was applied to study the optical field modulation of NO Rydberg-state populations. The A(2)Sigma +(upsilon = 2) state is populated by absorption of one 271-nm photon. Two peaks in the photoelectron kinetic energy spectra, centered at 0.82 and 2.35 eV, are caused by ionization from the A(2)Sigma(+) (upsilon = 2) state by time-delayed one-color and two-color multiphoton ionization, respectively. In the overlap region of the pump and probe light, the C(2)Pi (upsilon = 4) state is populated by a 1 + 1' excitation. When the pump laser intensity is increased, other Rydberg states (E(2)Sigma(+), F(2)Delta, and D(2)Sigma(+)) are moved into resonance by a laser-induced Stark shift. These states can be populated only within the temporal overlap region of the pump and probe light. When the intensity of the pump laser is higher than 2.9 x 10(12) W/cm(2), Rydberg-valence coupling between the A(2)Sigma(+)(upsilon = 2) and B(2)Pi (upsilon = 4) states may play a key role, resulting in photoelectrons with kinetic energy of 0.37 eV. The coupling strength increases with increasing pump laser intensity.
语种英语
WOS记录号WOS:000277227300137
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被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/141868
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
2.Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
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Wang, Bingxing,Liu, Benkang,Wang, Yanqiu,et al. Field modulation of Rydberg-state populations of NO studied by femtosecond time-resolved photoelectron imaging[J]. PHYSICAL REVIEW A,2010,81(4).
APA Wang, Bingxing,Liu, Benkang,Wang, Yanqiu,&Wang, Li.(2010).Field modulation of Rydberg-state populations of NO studied by femtosecond time-resolved photoelectron imaging.PHYSICAL REVIEW A,81(4).
MLA Wang, Bingxing,et al."Field modulation of Rydberg-state populations of NO studied by femtosecond time-resolved photoelectron imaging".PHYSICAL REVIEW A 81.4(2010).
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