Second order Born approximation;
Perpendicular plane ionization;
Polarization potential;
DWBA;
PCI;
(e;
2e);
process;
ELECTRON-IMPACT IONIZATION;
HELIUM;
APPROXIMATIONS;
SCATTERING;
COLLISIONS;
MODEL;
D O I:
10.1016/j.elspec.2014.09.001
中图分类号:
O433 [光谱学];
学科分类号:
0703 ;
070302 ;
摘要:
Triple differential cross section (TDCS) results are reported for the perpendicular plane ionization of Xe (5p) at incident electron energies 5 eV, 10 eV, 20 eV, and 40 eV above ionization potential. The modified distorted wave Born approximation formalism with first as well as the second order Born terms has been used to calculate the TDCS. Effects of target polarization and post collision interaction have also been included. We compare the (e, 2e) TDCS results of our calculation with the recent available experimental data and theoretical results and discuss the process contributing to structure seen in the differential cross section. It has been observed from the present study that the second order effect and target polarization make significant contribution in description of collision dynamics of xenon at the low and intermediate energy for the perpendicular emission of electrons. (C) 2014 Elsevier B.V. All rights reserved.