This paper presents the fully differential cross sections （FDCS） for 102eV electron impact single ionization of helium for both the coplanar and perpendicular plane asymmetric geometries within the framework of dyna...This paper presents the fully differential cross sections （FDCS） for 102eV electron impact single ionization of helium for both the coplanar and perpendicular plane asymmetric geometries within the framework of dynamically screened three-Coulomb-wave theory. Comparisons are made with the experimental data and those of the three-Coulomb wave function model and second-order distorted-wave Born method. The angular distribution and relative heights of the present FDCS is found to be in very good agreement with the experimental data in the perpendicular plane geometry. It is shown that dynamical screening effects are significant in this geometry. Three-body coupling is expected to be weak in the coplanar geometry, although the precise absolute value of the cross section is still sensitive to the interaction details.展开更多
A dynamically screened three-Coulomb-wave （DS3C） method is applied to study the single ionization of magnesium by electron impact. Triple differential cross sections （TDCS） are calculated in doubly symmetric geome...A dynamically screened three-Coulomb-wave （DS3C） method is applied to study the single ionization of magnesium by electron impact. Triple differential cross sections （TDCS） are calculated in doubly symmetric geometry at incident energies of 13.65, 17.65, 22.65, 27.65, 37.65, 47.65, 57.65, and 67.65 eV. Comparisons are made with experimental data and theoretical predictions from a three-Coulomb-wave function （3C） approach and distorted-wave Born approximation （DWBA）. The overall agreement between the predictions of the DS3C model and the DWBA approach with the experimen- tal data is satisfactory.展开更多
基金国防科技重点实验室基金项目（51447070104252502） The author would like to thanks Academician Lu Jian-xun and Profs Yi Xue-qin and Song Dong-an for their useful help and suggestions.
基金Project supported by the Natural Science Foundation of Shanxi Province,China (Grant No 20051008)the Science Foundation for Returnee of Shanxi Province of China (Grant No 02-16)
文摘This paper presents the fully differential cross sections （FDCS） for 102eV electron impact single ionization of helium for both the coplanar and perpendicular plane asymmetric geometries within the framework of dynamically screened three-Coulomb-wave theory. Comparisons are made with the experimental data and those of the three-Coulomb wave function model and second-order distorted-wave Born method. The angular distribution and relative heights of the present FDCS is found to be in very good agreement with the experimental data in the perpendicular plane geometry. It is shown that dynamical screening effects are significant in this geometry. Three-body coupling is expected to be weak in the coplanar geometry, although the precise absolute value of the cross section is still sensitive to the interaction details.
基金supported by the National Natural Science Foundation of China(Grant No.11274215)
文摘A dynamically screened three-Coulomb-wave （DS3C） method is applied to study the single ionization of magnesium by electron impact. Triple differential cross sections （TDCS） are calculated in doubly symmetric geometry at incident energies of 13.65, 17.65, 22.65, 27.65, 37.65, 47.65, 57.65, and 67.65 eV. Comparisons are made with experimental data and theoretical predictions from a three-Coulomb-wave function （3C） approach and distorted-wave Born approximation （DWBA）. The overall agreement between the predictions of the DS3C model and the DWBA approach with the experimen- tal data is satisfactory.
