(e,2e) processes on atomic targets (Ne, Ar) and molecular targets (CH4, N-2, CO2): Role of electron-nucleus scattering

doi:10.1103/PhysRevA.86.012712

	(e,2e) processes on atomic targets (Ne, Ar) and molecular targets (CH4, N-2, CO2): Role of electron-nucleus scattering
	Zhang, P.1,2; Ma, X.1; Yan, S.1; Xu, S.1; Zhang, S. F.1,3; Zhu, X. L.1; Feng, W. T.1; Liu, H. P.1
刊名	PHYSICAL REVIEW A
	2012-07-30
卷号	86
ISSN号	1050-2947
DOI	10.1103/PhysRevA.86.012712
文献子类	Article
英文摘要	The momentum distributions of the recoil ions were measured for the single ionization of atomic targets (Ne, Ar) and of molecular targets (CH4, N-2, CO2) at incident electron energies ranging from 80 to 220 eV by using the reaction microscope. It was found that there are a remarkable number of recoil ions with large longitudinal momenta, and the relative contribution of these ions for Ne (e, 2e) reactions decreases faster than that for Ar (e, 2e) reactions with the incident electron energy increasing. This observed feature can be qualitatively interpreted by the different effective potential of the target core experienced by the electrons. The appearance of the large longitudinal momentum recoil ions for CH4, N-2, and CO2 (e, 2e) reactions indicates that the strong interaction between the electron and the component-atoms target core in the molecules plays a significant role in the single ionization of small molecular targets. Depending on the independent atom model, we can intuitively understand the characteristics of the momentum distributions of the recoil ions CH4+, N-2(+), and CO2+, respectively.
资助项目	National Natural Science Foundation of China[10979007] ; National Natural Science Foundation of China[10674140]
WOS关键词	DIFFERENTIAL CROSS-SECTIONS ; IMPACT IONIZATION ; HYDROGEN-ATOMS ; ENERGY ; INTERMEDIATE ; HELIUM ; HE
WOS研究方向	Optics ; Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000306921800009
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/48723]
专题	中国科学院近代物理研究所
通讯作者	Ma, X.
作者单位	1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.Max Planck Inst Kernphys, D-69117 Heidelberg, Germany
推荐引用方式 GB/T 7714	Zhang, P.,Ma, X.,Yan, S.,et al. (e,2e) processes on atomic targets (Ne, Ar) and molecular targets (CH4, N-2, CO2): Role of electron-nucleus scattering[J]. PHYSICAL REVIEW A,2012,86.
APA	Zhang, P..,Ma, X..,Yan, S..,Xu, S..,Zhang, S. F..,...&Liu, H. P..(2012).(e,2e) processes on atomic targets (Ne, Ar) and molecular targets (CH4, N-2, CO2): Role of electron-nucleus scattering.PHYSICAL REVIEW A,86.
MLA	Zhang, P.,et al."(e,2e) processes on atomic targets (Ne, Ar) and molecular targets (CH4, N-2, CO2): Role of electron-nucleus scattering".PHYSICAL REVIEW A 86(2012).