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题名: Photofragment translational spectroscopy of iodobenzene at 266 nm
作者: Zhang, H;  Zhu, RS;  Wang, GJ;  Sun, JL;  Han, K;  He, GZ;  Lou, NQ
关键词: universal crossed molecular beam machine ;  angular distribution ;  translational energy distribution
刊名: SCIENCE IN CHINA SERIES B-CHEMISTRY
发表日期: 1999-06-01
卷: 42, 期:3, 页:305-310
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
英文摘要: The photofragmentation of C6H5I at 266 nn is investigated on the universal crossed molecular beam ma chine, and the translational spectroscopy as well as the angular distribution of I atom is measured. The results reveal that under the laser intensity of 10(R) W/cm(2) the single-photon dissociation competes with multi-photon processes. In single-photon dissociation the anisotropy parameter beta is 0.4 and the average translational energy is only 1.04 kcal/mol, which indicates that this process is a slow predissociation. In two-photon photofragmentation the average translational energy is 51.64 kcal/mol, which accounts for about 35% of the available energy. Another photofragmentation channel is even more faster, whose peak in time-of-flight spectra corresponds to four or five photon absorptions. The branching ratio of these three channels is determined to he about 3:3:4.
关键词[WOS]: NO2 PHOTODISSOCIATION ;  193 NM ;  DISTRIBUTIONS ;  FRAGMENT ;  SPECTRA
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000080893100011
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/85275
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:
Zhang, H,Zhu, RS,Wang, GJ,et al. Photofragment translational spectroscopy of iodobenzene at 266 nm[J]. SCIENCE IN CHINA SERIES B-CHEMISTRY,1999,42(3):305-310.
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