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题名: Application of laser induced photoemission electron in time-of-flight mass spectrometry
作者: Wang, L;  Li, HY;  Bai, JL;  Hua, XQ;  Lu, RC
关键词: photoemission electron ;  multicharged ions ;  high Rydberg states
刊名: INTERNATIONAL JOURNAL OF MASS SPECTROMETRY
发表日期: 1998-12-30
卷: 181, 页:43-50
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Physics, Atomic, Molecular & Chemical ;  Spectroscopy
研究领域[WOS]: Physics ;  Spectroscopy
英文摘要: Multicharged ions of Ar and NO were observed in multiphoton ionization (MPI) experiments while a focused laser beam struck extractor grid of time-of-flight mass spectrometry (TOF-MS). A special photoemission electron impact ionizer was designed. This ionizer made it possible to investigate the mechanism of photoelectron impact ionization. The experiment showed that the multicharged ions could be produced only by the photoelectron impact, probably ionized step by step. With this special ionizer high Rydberg states (n similar to 40 - 100) of atoms and/or molecules were, for the first time, observed in the TOF-MS. The yield ratio of Rydberg states to ions was strongly dependent of the laser power and the energy of the photoemission electrons. Our experiment results showed that this ionizer could be an effective method for producing multicharged ions and high Rydberg states of atoms and molecules. (Int J Mass Spectrom 181 (1998) 43-50) (C) 1998 Elsevier Science B.V.
关键词[WOS]: IMPACT IONIZATION ;  PHOTOELECTRONS ;  GENERATION
语种: 英语
WOS记录号: WOS:000077766200005
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138178
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

Recommended Citation:
Wang, L,Li, HY,Bai, JL,et al. Application of laser induced photoemission electron in time-of-flight mass spectrometry[J]. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY,1998,181:43-50.
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