Abstract: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… Show more
S-matrix study on alignment dependence of single ionization of molecular ions with different active orbitals *Li Yan(李 燕) a) , Jia Xin-Yan(贾欣燕) b) † , Yang Shi-Ping(杨世平) a) ‡ , Li Wei-Dong(李卫东) c) , and Chen Jing(陈 京) b)d)
S-matrix study on alignment dependence of single ionization of molecular ions with different active orbitals *Li Yan(李 燕) a) , Jia Xin-Yan(贾欣燕) b) † , Yang Shi-Ping(杨世平) a) ‡ , Li Wei-Dong(李卫东) c) , and Chen Jing(陈 京) b)d)
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 [
A modified distorted-wave Born approximation (DWBA) method is used to calculate the triple differential cross sections (TDCSs) in a coplanar asymmetric geometry for the electron impact single ionization of a He (1s 2 ) atom at intermediate and lower energies. The post-collision interaction and the polarization effect in (e, 2e) collisions of helium are considered in the calculations. The polarization potentials from the damping method and density functional theory (DFT) are compared. Theoretical results are compared with the recent experimental data.
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