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题名: The influence of ionization efficiency on the multiply charged ions produced by laser-clusters interaction
作者: Qu Pi-Cheng1, 2;  Wang Wei-Guo2;  Zhao Wu-Duo2, 3;  Zhang Gui-Qiu1;  Li Hai-Yang2
关键词: cluster ;  multiply charged ion ;  multiphoton ionization ;  benzene
刊名: ACTA PHYSICA SINICA
发表日期: 2012
DOI: 10.7498/aps.61.182101
卷: 61, 期:18
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Physics, Multidisciplinary
研究领域[WOS]: Physics
英文摘要: The productions of multiply charged ions in the interactions of intense nanosecond laser pulse with clusters have aroused broad interests in molecular physics. Benzene, cyclohexene and cyclohexane clusters are chosen to study the effect of multiphoton ionization (MPI) efficiency on the relative intensity of multiply charged ions, as they possess similar molecular structures and the same element constitutions. They are ionized with a 5 ns Nd-YAG nanosecond laser. The carbon charge state produced by cyclohexene and cyclohexane is about 4; while by benzene is only about 3. The ratios of C3+/C2+ for cyclohexane, cyclohexene and benzene are 1.1, 0.6 and 0.4, respectively. The relative MPI efficiencies of three molecules are measured to be in the magnitude sequence of benzene > cyclohexene > cyclohenane by diffusion beam. Higher MPI efficiency of molecules can cause more than one molecules to be ionized at the edge of laser pulse, the Coulomb repelling force between adjacent ions leads clusters to early split into small size ones, which will prevent the production of the highly charged ions.
关键词[WOS]: ELECTRON-ENERGY DISTRIBUTION ;  NANOSECOND LASER ;  WAVELENGTH DEPENDENCE ;  ASSISTANT GENERATION ;  METHYL-IODIDE ;  BEAM ;  BENZENE ;  INTENSITY ;  FIELDS ;  NM
语种: 英语
WOS记录号: WOS:000311836700015
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/143023
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.Shandong Normal Univ, Coll Chem Chem Engn & Mat Sci, Jinan 250014, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
3.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

Recommended Citation:
Qu Pi-Cheng,Wang Wei-Guo,Zhao Wu-Duo,et al. The influence of ionization efficiency on the multiply charged ions produced by laser-clusters interaction[J]. ACTA PHYSICA SINICA,2012,61(18).
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