Dissociation dynamics of CH3I in electric spark induced breakdown revealed by time-resolved laser induced breakdown spectroscopy

	Dissociation dynamics of CH3I in electric spark induced breakdown revealed by time-resolved laser induced breakdown spectroscopy
	Wang, Yang 1; Liu, Wei-long 1; Song, Yun-fei 1; Duo, Li-ping 2; Liu, Yu-qiang 1; Yang, Yan-qiang 1,3
刊名	chemical physics
	2015-02-02
卷号	447 页码:30-35
关键词	Laser-induced breakdown spectroscopy Electric spark induced breakdown Dissociation dynamics Methyl iodide Emission band of I-2
英文摘要	the electric discharge spark dissociation of gas ch3i is found to be similar to its femtosecond laser photodissociation. the almost identical spectra of the two processes show that their initial ionization conditions are very similar. the initial ionization followed by molecular fragmentation is proposed as the dissociation mechanism, in which the characteristic emissions of i+, ch3, ch2, ch, h, and i-2 are identified as the dissociation products. the emission band of 505 nm i-2 is clearly observed in the time-resolved laser induced breakdown spectroscopy (libs). the dynamic curve indicates that i-2* molecules are formed after the delay time of similar to 4.7 ns. the formation of i-2* molecule results from the bimolecular collision of the highly excited iodine atom i*(p-4) and ch3i molecule. this dynamical information can help understand the process of electric discharge spark dissociation of ch3i. (c) 2014 elsevier b.v. all rights reserved.
WOS标题词	science & technology ; physical sciences
类目[WOS]	chemistry, physical ; physics, atomic, molecular & chemical
研究领域[WOS]	chemistry ; physics
关键词[WOS]	mass-spectrometry ; methyl-iodide ; nm ; photodissociation ; picosecond ; photolysis
收录类别	SCI
语种	英语
WOS记录号	WOS:000349085300005
公开日期	2016-05-09
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/145963]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.Harbin Inst Technol, Dept Phys, Harbin 150001, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China 3.China Acad Engn Phys, Inst Fluid Phys, Natl Key Lab Shock Wave & Detonat Phys, Mianyang 621900, Sichuan, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yang,Liu, Wei-long,Song, Yun-fei,et al. Dissociation dynamics of CH3I in electric spark induced breakdown revealed by time-resolved laser induced breakdown spectroscopy[J]. chemical physics,2015,447:30-35.
APA	Wang, Yang,Liu, Wei-long,Song, Yun-fei,Duo, Li-ping,Liu, Yu-qiang,&Yang, Yan-qiang.(2015).Dissociation dynamics of CH3I in electric spark induced breakdown revealed by time-resolved laser induced breakdown spectroscopy.chemical physics,447,30-35.
MLA	Wang, Yang,et al."Dissociation dynamics of CH3I in electric spark induced breakdown revealed by time-resolved laser induced breakdown spectroscopy".chemical physics 447(2015):30-35.