Triple differential cross sections of the （e, 2e） reaction for electron impact Ar in a coplanar asymmetric geometry

Abstract

The triple differential cross section for Ar（3p6） in the special geometry of coplanar large energy loss and close to minimum momentum transfer has been calculated with the modified distorted wave Born approximation （DWBA）. The polarization interaction between the electron and the target, especially in the near-target region, and the post-collision interactions are included in the calculation. The theoretical results with modified DWBA are compared with the recent experimental data, the standard DWBA and DWBA-G. It is shown that the polarization are very important in the calculation of TDCS in coplanar asymmetric （e,2e） reaction.

Second-order Born calculation of coplanar symmetric (e, 2e) process on Mg

“…[1][2][3][4] Relative cross sections, especially the triple differential cross sections (TDCS), can provide complete information about atomic structure and collision dynamics in the process. [5][6][7][8][9] In the past decade, impressive progress has been made in theoretical predictions of TDCS in the electron impact ionization of H and He by using several non-perturbative approaches, such as exterior complex scaling (ECS), [10] convergent close-coupling (CCC), [11] time-dependent close-coupling (TDCC), [12] and B-spline R-matrix (BSR). [13] Since the dynamics of (e, 2e) process for simple targets has been almost fully understood by these state-of-the-art theoretical methods, the focus of research is now shifting to study on the ionization of more complex targets.…”