Effect of initial-state target polarization on single ionization of helium by 1-keV electron impact

doi:10.1088/1674-1056/21/7/073402

中国物理B ›› 2012, Vol. 21 ›› Issue (7): 73402-073402.doi: 10.1088/1674-1056/21/7/073402

• ATOMIC AND MOLECULAR PHYSICS • 上一篇下一篇

Effect of initial-state target polarization on single ionization of helium by 1-keV electron impact

孙世艳, 马晓艳, 李霞, 苗向阳, 贾祥富

Center for Molecules Research, School of Physics and Information Engineering, Shanxi Normal University, Linfen 041004, China

收稿日期:2011-09-08 修回日期:2012-04-05 出版日期:2012-06-01 发布日期:2012-06-01
基金资助:
Project supported by the Natural Science Foundation of Shanxi Province of China (Grant Nos. 20051008 and 2010011009), the National Natural Science Foundation of China (Grant No. 11047191), the Key Project of Chinese Ministry of Education (Grant No. 211025), and the Natural Science Foundation for Young Scientists of Shanxi Province, China (Grant No. 2009021005).

Effect of initial-state target polarization on single ionization of helium by 1-keV electron impact

Sun Shi-Yan (孙世艳), Ma Xiao-Yan (马晓艳), Li Xia (李霞), Miao Xiang-Yang (苗向阳), Jia Xiang-Fu (贾祥富 )

Center for Molecules Research, School of Physics and Information Engineering, Shanxi Normal University, Linfen 041004, China

Received:2011-09-08 Revised:2012-04-05 Online:2012-06-01 Published:2012-06-01
Contact: Jia Xiang-Fu E-mail:jiaxf@dns.sxnu.edu.cn
Supported by:
Project supported by the Natural Science Foundation of Shanxi Province of China (Grant Nos. 20051008 and 2010011009), the National Natural Science Foundation of China (Grant No. 11047191), the Key Project of Chinese Ministry of Education (Grant No. 211025), and the Natural Science Foundation for Young Scientists of Shanxi Province, China (Grant No. 2009021005).

摘要/Abstract

摘要： We report new results of triple differential cross sections for the single ionization of helium by 1-KeV electron impact at the ejection energy of 10 eV. Investigations have been made for both the perpendicular plane and the plane perpendicular to the momentum transfer geometries. The present calculation is based on the three-Coulomb wave function. Here we have also incorporated the effect of target polarization in the initial state. A comparison is made between the present calculation with the results of other theoretical methods and a recent experiment [D黵r M, Dimopoulou C, Najjari B, Dorn A, Bartschat K, Bray I, Fursa D V, Chen Z, Madison D H and Ullrich J 2008 Phys. Rev. A 77 032717]. At an impact energy of 1 KeV, the target polarization is found to induce a substantial change of the cross section for the ionization process. We observe that the effect of target polarization plays a dominant role in deciding the shape of triple differential cross sections.

关键词: triple differential cross section, target polarization, non-coplanar geometry

Abstract: We report new results of triple differential cross sections for the single ionization of helium by 1-KeV electron impact at the ejection energy of 10 eV. Investigations have been made for both the perpendicular plane and the plane perpendicular to the momentum transfer geometries. The present calculation is based on the three-Coulomb wave function. Here we have also incorporated the effect of target polarization in the initial state. A comparison is made between the present calculation with the results of other theoretical methods and a recent experiment [D黵r M, Dimopoulou C, Najjari B, Dorn A, Bartschat K, Bray I, Fursa D V, Chen Z, Madison D H and Ullrich J 2008 Phys. Rev. A 77 032717]. At an impact energy of 1 KeV, the target polarization is found to induce a substantial change of the cross section for the ionization process. We observe that the effect of target polarization plays a dominant role in deciding the shape of triple differential cross sections.

Key words: triple differential cross section, target polarization, non-coplanar geometry

中图分类号: (Atomic excitation and ionization)

34.80.Dp

孙世艳, 马晓艳, 李霞, 苗向阳, 贾祥富 . Effect of initial-state target polarization on single ionization of helium by 1-keV electron impact[J]. 中国物理B, 2012, 21(7): 73402-073402.

Sun Shi-Yan (孙世艳), Ma Xiao-Yan (马晓艳), Li Xia (李霞), Miao Xiang-Yang (苗向阳), Jia Xiang-Fu (贾祥富 ). Effect of initial-state target polarization on single ionization of helium by 1-keV electron impact[J]. Chin. Phys. B, 2012, 21(7): 73402-073402.

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Effect of initial-state target polarization on single ionization of helium by 1-keV electron impact

Effect of initial-state target polarization on single ionization of helium by 1-keV electron impact

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