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Cluster-assisted multiple ionization of methyl iodide by a nanosecond laser: Influence of laser intensity on the kinetic energy and peak profile of multicharged ions
Wen, LH; Li, HY; Luo, XL; Niu, DM; Xiao, X; Wang, B; Liang, F; Hou, KY; Shao, SY
关键词Methyl Iodide Multiple Ionization Cluster Space Charge Effect
刊名CHEMICAL PHYSICS
2006-03-20
DOI10.1016/j.chemphys.2005.09.006
322期:3页:360-365
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 ; COULOMB EXPLOSION ; MULTIPHOTON IONIZATION ; MOLECULAR CLUSTERS ; ELECTRON DYNAMICS ; NUCLEAR-DYNAMICS ; ATOMIC CLUSTERS ; GENERATION ; FIELDS ; PULSES
英文摘要The dependences of kinetic energies and peak profiles of multicharged ions of Iq+ (q = 2-3) and C2+ on the laser intensity have been Studied in detail by time-of-flight mass spectrometry, those multicharged ions are produced by irradiation of methyl iodide cluster beam with a nanosecond 532 nm Nd-YAG laser. Our experiments show that the kinetic energies released of multicharged ions increase linearly with the laser intensity in the range of 3 x 10(9)-2 x 10(11) W/cm(2). The peaks of multicharged ions are split to forward ions and backward ions, and the ratio of the backward ions to forward ions decreases exponentially with laser intensity. The decreasing of backward ions is probably due to Coulomb scattering by the heavier I+ ions when they turn around through the laser focus point. The linear dependence of kinetic energy of multicharged ions on laser intensity is interpreted by the ionization mechanism, in which the laser induced inverse bremsstrahlung heating of electron is the rate-limiting step. (c) 2005 Elsevier B.V. All rights reserved.
语种英语
WOS记录号WOS:000236318200014
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被引频次:12[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/321008/140264
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Environm Opt & Techol, Hefei 230031, Peoples R China
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GB/T 7714
Wen, LH,Li, HY,Luo, XL,et al. Cluster-assisted multiple ionization of methyl iodide by a nanosecond laser: Influence of laser intensity on the kinetic energy and peak profile of multicharged ions[J]. CHEMICAL PHYSICS,2006,322(3):360-365.
APA Wen, LH.,Li, HY.,Luo, XL.,Niu, DM.,Xiao, X.,...&Shao, SY.(2006).Cluster-assisted multiple ionization of methyl iodide by a nanosecond laser: Influence of laser intensity on the kinetic energy and peak profile of multicharged ions.CHEMICAL PHYSICS,322(3),360-365.
MLA Wen, LH,et al."Cluster-assisted multiple ionization of methyl iodide by a nanosecond laser: Influence of laser intensity on the kinetic energy and peak profile of multicharged ions".CHEMICAL PHYSICS 322.3(2006):360-365.
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