Photofragment translational spectroscopy of CH3I at 225 nm-with the high excitation of the symmetric stretch vibration of CH3 fragment

doi:10.1063/1.4757019

CORC > 化学研究所 > 中国科学院化学研究所

	Photofragment translational spectroscopy of CH3I at 225 nm-with the high excitation of the symmetric stretch vibration of CH3 fragment
	Hu, Lili 1,2; Zhou, Zhimin 1,2; Dong, Changwu 1,2; Zhang, Lijuan 1,2; Du, Yikui 1; Cheng, Min 1; Zhu, Qihe 1
刊名	JOURNAL OF CHEMICAL PHYSICS
	2012-10-14
卷号	137 期号:14
关键词	Electron Impact Excitation Molecule-photon Collisions Organic Compounds Photodissociation Time Of Flight Spectra Vibrational States
ISSN号	0021-9606
DOI	10.1063/1.4757019
英文摘要	The photodissociation dynamics of CH3I at 225 nm is studied on our high resolution mini-TOF photofragment translational spectrometer. The photofragment translational spectra of the I* and the I channels via parallel (parallel to) and perpendicular (perpendicular to) transitions, i.e., of the four pathways (3)Q(0), (3)Q(0) <- (1)Q(1), (1)Q(1), and (1)Q(1) <- (3)Q(0), are obtained with both the symmetric stretch (nu(1)) and the umbrella (nu(2)) vibrational modes of the CH3 fragments partially resolved. The strong excitation of the symmetric stretch mode (nu(1)) is revealed in both the I and the I* channels. The branching fractions for the four pathways (0.09 for (3)Q(0), 0.03 for (3)Q(0) <- (1)Q(1), 0.34 for (1)Q(1), and 0.54 for (1)Q(1) <- (3)Q(0)) show that the parallel transition ((3)Q(0) <- X) is the major and the I channel is dominant in the photodissociation of CH3I at 225 nm. The curve-crossing probability is found to be 0.86 for (1)Q(1) <- (3)Q(0) but 0.08 for (3)Q(0) <- (1)Q(1). (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4757019]
语种	英语
出版者	AMER INST PHYSICS
WOS记录号	WOS:000310302800013
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/48191]
专题	中国科学院化学研究所
通讯作者	Du, Yikui
作者单位	1.Chinese Acad Sci, Inst Chem, Natl Lab Mol Sci, State Key Lab Mol React Dynam, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Hu, Lili,Zhou, Zhimin,Dong, Changwu,et al. Photofragment translational spectroscopy of CH3I at 225 nm-with the high excitation of the symmetric stretch vibration of CH3 fragment[J]. JOURNAL OF CHEMICAL PHYSICS,2012,137(14).
APA	Hu, Lili.,Zhou, Zhimin.,Dong, Changwu.,Zhang, Lijuan.,Du, Yikui.,...&Zhu, Qihe.(2012).Photofragment translational spectroscopy of CH3I at 225 nm-with the high excitation of the symmetric stretch vibration of CH3 fragment.JOURNAL OF CHEMICAL PHYSICS,137(14).
MLA	Hu, Lili,et al."Photofragment translational spectroscopy of CH3I at 225 nm-with the high excitation of the symmetric stretch vibration of CH3 fragment".JOURNAL OF CHEMICAL PHYSICS 137.14(2012).