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学科主题: 物理化学
题名: Multiple ionization of CH3I clusters by nanosecond laser: Electron energy distribution and formation mechanism of multiply charged ions
作者: Zhao, Wuduo1, 2;  Wang, Weiguo1;  Qu, Picheng1;  Hou, Keyong1;  Li, Haiyang1
通讯作者: 李海洋
刊名: CHEMICAL PHYSICS LETTERS
发表日期: 2012-08-10
DOI: 10.1016/j.cplett.2012.06.053
卷: 543, 页:55-60
收录类别: SCI
文章类型: Article
部门归属: 1
项目归属: 102
产权排名: 1,1
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical ;  Physics, Atomic, Molecular & Chemical
研究领域[WOS]: Chemistry ;  Physics
英文摘要: To understand the production mechanisms for multiply charged ions Cq+ (q = 2-3) and Iq+ (q = 2-4), the kinetic energy of released electron was measured for understanding the interaction of nanosecond laser with CH3I cluster. The mean electron energy increased from 19 to 33 eV as the laser intensity was raised from 2.9 x 10(9) to 4.7 x 10(10) W/cm(2). The evolution of the mean electron energy as a function of laser intensity was similar to that of multiply charged ions, which indicated that electron impact ionization played an important role in the formation of Cq+ (q = 2-3) and Iq+ (q = 2-4). Moreover, the formation of more ionized sites would lead to the cluster splitting, which is disadvantageous for the multiply charged ion production. (C) 2012 Elsevier B.V. All rights reserved.
关键词[WOS]: METHYL-IODIDE CLUSTERS ;  COULOMB EXPLOSION ;  WAVELENGTH DEPENDENCE ;  ASSISTANT GENERATION ;  XE CLUSTERS ;  ATOMIC IONS ;  PULSES ;  NM ;  BENZENE ;  INTENSITY
语种: 英语
WOS记录号: WOS:000306972300010
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/118324
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, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Zhao, Wuduo,Wang, Weiguo,Qu, Picheng,et al. Multiple ionization of CH3I clusters by nanosecond laser: Electron energy distribution and formation mechanism of multiply charged ions[J]. CHEMICAL PHYSICS LETTERS,2012,543:55-60.
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