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Cluster-assisted multiple-ionization of methyl iodide by a nanosecond laser: Wavelength dependence of multiple-charge ions
Wang, Weiguo; Li, Haiyang; Niu, Dongmei; Wen, Lihua; Zhang, Nazhen
关键词Multiple-charge Ions Nanosecond Laser Methyl Iodide Cluster Inverse Bremsstrahlung
刊名CHEMICAL PHYSICS
2008-09-03
DOI10.1016/j.chemphys.2008.05.016
352期:1-3页:111-116
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Physical ; Physics, Atomic, Molecular & Chemical
研究领域[WOS]Chemistry ; Physics
关键词[WOS]X-RAY-EMISSION ; MULTIELECTRON DISSOCIATIVE IONIZATION ; MULTIPHOTON INVERSE BREMSSTRAHLUNG ; ATOMIC CLUSTERS ; ENERGY ; FIELD ; GENERATION ; DYNAMICS ; PULSES ; NM
英文摘要As efforts continue to elucidate laser-cluster interactions, we investigated the influence of laser wavelength on ion products. In this study, a pulsed methyl iodide cluster was irradiated with a Nd-YAG nanosecond laser, and the ion products were analyzed using time-of-flight mass spectrometry. Multiple-charge atomic ions of Cq+ and Iq+(q >= 2) were observed using 532 and 1064 nm laser wavelengths; however, only single-charge atomic and molecular ions appeared at 266 and 355 nm. We show that the charge-state distribution for multiple-charge ions is almost independent of laser intensity. A three-stage model was developed to further understand these experimental results: the inverse electron bremsstrahlung heating rate is proportional to the square of laser wavelength, which seems to explain the dependence of multiple-charge ions on the wavelength. (C) 2008 Elsevier B.V. All rights reserved.
语种英语
WOS记录号WOS:000259463200014
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被引频次:29[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/321008/140825
专题中国科学院大连化学物理研究所
作者单位Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
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GB/T 7714
Wang, Weiguo,Li, Haiyang,Niu, Dongmei,et al. Cluster-assisted multiple-ionization of methyl iodide by a nanosecond laser: Wavelength dependence of multiple-charge ions[J]. CHEMICAL PHYSICS,2008,352(1-3):111-116.
APA Wang, Weiguo,Li, Haiyang,Niu, Dongmei,Wen, Lihua,&Zhang, Nazhen.(2008).Cluster-assisted multiple-ionization of methyl iodide by a nanosecond laser: Wavelength dependence of multiple-charge ions.CHEMICAL PHYSICS,352(1-3),111-116.
MLA Wang, Weiguo,et al."Cluster-assisted multiple-ionization of methyl iodide by a nanosecond laser: Wavelength dependence of multiple-charge ions".CHEMICAL PHYSICS 352.1-3(2008):111-116.
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