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题名: Studies of photoionization of CF3I by femtosecond time-resolved mass spectrometry
作者: Yin, SH;  Liu, HP;  Zhang, JY;  Jiang, B;  Wang, L;  Sha, GH;  Lou, NQ
关键词: femtosecond ;  pump-probe ;  photonionization ;  lifetime
刊名: CHINESE JOURNAL OF CHEMICAL PHYSICS
发表日期: 2003-02-01
卷: 16, 期:1, 页:3-8
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Physics, Atomic, Molecular & Chemical
研究领域[WOS]: Physics
英文摘要: The multi-photon dissociative photoionization dynamics of CF3I has been studied with femtosecond two-color pump-probe time of flight mass spectra at a pump pulse of 265 nm and a probe pulse of 398 nm. The life constants of CF3I+ and its fragment ions CF3+ and I+ are obtained as (96 +/- 7), (198 +/- 130) and (167 +/- 6) fs, respectively. The multi-photon dynamics leading to these ions differ. CF3I+ corresponds to a (1 + 2') transition with one-photon pump excitation to the A band of CF3I. CF3+ are mainly formed by a tow-photon probe excitation to the CF3+ with subsequent dissociation of parent ions. I+ are produced in (2 + 2') combined with (1 + 1' + 2') process. The results provide information on the multi-photon pathways involved.
关键词[WOS]: ENHANCED MULTIPHOTON IONIZATION ;  MOLECULAR-BEAM ;  RYDBERG STATES ;  248 NM ;  A-BAND ;  304 NM ;  PHOTODISSOCIATION ;  SPECTROSCOPY ;  DYNAMICS ;  ENERGY
语种: 英语
WOS记录号: WOS:000181657300002
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138217
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:
Yin, SH,Liu, HP,Zhang, JY,et al. Studies of photoionization of CF3I by femtosecond time-resolved mass spectrometry[J]. CHINESE JOURNAL OF CHEMICAL PHYSICS,2003,16(1):3-8.
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