Three-body fragmentation dynamics of CH3CCH3+investigated by 50-keV/u Ne8+impact: Comparison with its isomer ion CH2CCH2 3+

doi:10.1103/PhysRevA.105.022814

	Three-body fragmentation dynamics of CH3CCH3+investigated by 50-keV/u Ne8+impact: Comparison with its isomer ion CH2CCH2 3+
	Yuan, Hang 1,2; Xu, Zhongfeng 1; Xu, Shenyue 2,3; Ma, Chao 4; Zhang, Zhen 1; Guo, Dalong 2,3; Zhu, Xiaolong 2,3; Zhao, Dongmei 2; Zhang, Shaofeng 2,3; Yan, Shuncheng 2,3
刊名	PHYSICAL REVIEW A
	2022-02-22
卷号	105 期号:2 页码:8
ISSN号	2469-9926
DOI	10.1103/PhysRevA.105.022814
通讯作者	Xu, Shenyue(s.xu@impcas.ac.cn) ; Ma, Xinwen(x.ma@impcas.ac.cn)
英文摘要	The three-body fragmentation dynamics of propyne (CH3CCH) to H+ + CH+ + C2H2+ and H+ + CH2+ + C2H+ is investigated by 50-keV/u Ne8+ ion impact. Employing the reaction microscope, all three ionic fragments are detected in coincidence, and the momentum vector as well as kinetic energy of each fragment is obtained. By analyzing the momentum and kinetic energy correlation between different fragments, various fragmentation mechanisms are identified, and the relative ratio of each mechanism is determined. We find that the concerted fragmentation with CH and CC bonds breaking simultaneously and the sequential pathway with CH breakage prior to the CC breakage are the major contributions to both channels. In contrast, the sequential pathway with CC breakage prior to CH breakage was found to make a minor contribution only to the H+ + CH+ + C2H2+ channel. In addition, we compare the present results for CH3CCH with CH2CCH2 published in Ma et al. [C. Ma, S. Xu, D. Zhao, D. Guo, S. Yan, W. Feng, X. Zhu, and X. Ma, Phys. Rev. A 101, 052701 (2020)]. The location of the CH and CC bonds' breakage, either from distinct C atoms or from the same C atom, leads to similar dissociation mechanisms but different ionic fragments for the two isomers.
资助项目	National Key Research and Development Program of China[2017YFA0402300] ; National Natural Science Foundation of China[11874365] ; National Natural Science Foundation of China[11875219]
WOS关键词	MOMENTUM SPECTROSCOPY ; RECOIL-ION ; DISSOCIATIONS ; IONIZATION ; CH4
WOS研究方向	Optics ; Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000763099800014
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/141960]
专题	中国科学院近代物理研究所
通讯作者	Xu, Shenyue; Ma, Xinwen
作者单位	1.Xi An Jiao Tong Univ, Sch Phys, Xian 710049, Peoples R China 2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 3.Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 100049, Peoples R China 4.Engn Univ PAP, Fdn Dept, Xian 710086, Peoples R China
推荐引用方式 GB/T 7714	Yuan, Hang,Xu, Zhongfeng,Xu, Shenyue,et al. Three-body fragmentation dynamics of CH3CCH3+investigated by 50-keV/u Ne8+impact: Comparison with its isomer ion CH2CCH2 3+[J]. PHYSICAL REVIEW A,2022,105(2):8.
APA	Yuan, Hang.,Xu, Zhongfeng.,Xu, Shenyue.,Ma, Chao.,Zhang, Zhen.,...&Ma, Xinwen.(2022).Three-body fragmentation dynamics of CH3CCH3+investigated by 50-keV/u Ne8+impact: Comparison with its isomer ion CH2CCH2 3+.PHYSICAL REVIEW A,105(2),8.
MLA	Yuan, Hang,et al."Three-body fragmentation dynamics of CH3CCH3+investigated by 50-keV/u Ne8+impact: Comparison with its isomer ion CH2CCH2 3+".PHYSICAL REVIEW A 105.2(2022):8.