Momentum image of emission electrons in transfer ionization process of slow He2+ colliding on He

	Momentum image of emission electrons in transfer ionization process of slow He2+ colliding on He
	Li Bin1,2 ; Zhang Da-Cheng2 ; Meng Ling-Jie 1,2; Zhang Peng-Ju 1,2; Feng Wen-Tian1,2 ; Ma Xin-Wen2 ; Zhu Xiao-Long2 ; Zhang Shao-Feng1,2 ; Liu Hui-Ping2 ; Xu Shen-Yue1,2
刊名	ACTA PHYSICA SINICA
	2010-12-01
卷号	59 页码:8471-8477
关键词	reaction microscope transfer ionization velocity distributions of electrons interference of sigma amplitude and pi amplitude
ISSN号	1000-3290
英文摘要	The velocity distribution of emission electrons in the transfer ionization process of 70 keV He2+ colliding on He has been studied with a reaction microscope. These distributions show that the electrons lie mainly in the scattering plane which are observed to be emitted preferentially in the forward direction, lying between 0 and projectile velocity V-p. The distributions also display a typical two-fingered structure with a local minimum on internuclear axis. This characteristic can be qualitatively explained as being due to the interference between sigma amplitude and pi amplitude of electrons final wavefunction. It depends also on the impact parameters; the pi amplitude contribution is dominant at small impact parameters, which leads to a symmetric velocity distribution around the internuclear axis. However, at large impact parameters the sigma amplitude contribution increases relatively obviously, resulting in an asymmetric electrons velocity distribution around the internuclear axis.
资助项目	National Natural Science Foundation of China[10434100] ; National Natural Science Foundation of China[10979007]
WOS关键词	SADDLE-POINT ELECTRONS ; INTERMEDIATE ENERGIES ; COLLISIONS ; ION
WOS研究方向	Physics
语种	英语
出版者	CHINESE PHYSICAL SOC
WOS记录号	WOS:000286689500024
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/33184]
专题	近代物理研究所_实验物理中心
通讯作者	Ma Xin-Wen
作者单位	1.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Li Bin,Zhang Da-Cheng,Meng Ling-Jie,et al. Momentum image of emission electrons in transfer ionization process of slow He2+ colliding on He[J]. ACTA PHYSICA SINICA,2010,59:8471-8477.
APA	Li Bin.,Zhang Da-Cheng.,Meng Ling-Jie.,Zhang Peng-Ju.,Feng Wen-Tian.,...&Yan Shun-Cheng.(2010).Momentum image of emission electrons in transfer ionization process of slow He2+ colliding on He.ACTA PHYSICA SINICA,59,8471-8477.
MLA	Li Bin,et al."Momentum image of emission electrons in transfer ionization process of slow He2+ colliding on He".ACTA PHYSICA SINICA 59(2010):8471-8477.