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题名: Cluster-assisted generation of multi-charged ions in nanosecond laser ionization of pulsed hydrogen sulfide beam at 1064 and 532 nm
作者: Niu Dong-Mei;  Li Hai-Yang;  Luo Xiao-Lin;  Liang Feng;  Cheng Shuang;  Li An-Lin
通讯作者: 李海洋
关键词: cluster ;  multi-charged ion ;  inverse bremsstrahlung absorption ;  electron impact ionization
刊名: CHINESE PHYSICS
发表日期: 2006-07-01
卷: 15, 期:7, 页:1511-1516
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]: Physics, Multidisciplinary
研究领域[WOS]: Physics
英文摘要: The multi-charged sulfur ions of Sq+ (q = 6) have been generated when hydrogen sulfide cluster beams are irradiated by a nanosecond laser of 1064 and 532nm with an intensity of 10(10) similar to 10(12) W(.)cm(-2). S6+ is the dominant multi-charged species at 1064 nm, while S4+, S3+ and S2+ ions are the main multi-charged species at 532 nm. A three-step model (i.e., multiphoton ionization triggering, inverse bremsstrahlung heating, electron collision ionizing) is proposed to explain the generation of these multi-charged ions at the laser intensity stated above. The high ionization level of the clusters and the increasing charge state of the ion products with increasing laser wavelength are supposed mainly due to the rate-limiting step, i.e., electron heating by absorption energy from the laser field via inverse bremsstrahlung, which is proportional to lambda(2), lambda being the laser wavelength.
关键词[WOS]: MULTIELECTRON DISSOCIATIVE IONIZATION ;  COULOMB EXPLOSION ;  WAVELENGTH DEPENDENCE ;  MULTIPLE IONIZATION ;  ELECTRON ;  DYNAMICS ;  BENZENE ;  FIELD
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000239006600022
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/98227
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, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Environm Opt & Technol, Hefei 230031, Peoples R China

Recommended Citation:
Niu Dong-Mei,Li Hai-Yang,Luo Xiao-Lin,et al. Cluster-assisted generation of multi-charged ions in nanosecond laser ionization of pulsed hydrogen sulfide beam at 1064 and 532 nm[J]. CHINESE PHYSICS,2006,15(7):1511-1516.
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