Effects of target polarization and postcollision interaction on the electron-impact single ionization of Ne(2p), Ar(3p), and Na(3s) atoms

Fully differential cross sections for low to intermediate energy perpendicular plane ionization of xenon atoms

“…There are several modifications which can be used to improve the theoretical TDCS at lower incident electron energies, such as approximating the post collision interaction (PCI), correlation-polarization effects, electron exchange and inclusion of higher order terms. Theoretical results are in better agreement with experiments for electron impact ionization of various targets at lower energies if these effects are included (see [13][14][15][16][17]). Usually for lighter nuclei the first Born approximation (FBA) well describes the electron scattering.…”

“…The recent approach of B-spline R-matrix (BSR) method obtained good agreement with experimental ionization data for helium [9,10], neon [11] and argon [12] atoms. However, perturbative approach such as the distorted wave Born approximation (DWBA) has also been a reliable alternative for more http complex many-electron systems, like heavier noble gas targets, alkali and alkali earth metals [13,14]. Theoretical results of distorted wave Born approximation (DWBA) are in better agreement with experiments for electron impact ionization of various targets at higher energies but still there are many discrepancies between the available theoretical results and experimental data at the low and intermediate incident electron energies [15].…”

Second Order Born Effects in the Perpendicular Plane Ionization of Xe (5p) Atoms

“…There are several modifications which can be used to improve the theoretical TDCS at lower incident electron energies, such as approximating the post collision interaction (PCI), correlation-polarization effects, electron exchange and inclusion of higher order terms. Theoretical results are in better agreement with experiments for electron-impact ionization of various targets at lower energies if these effect are included (see [14][15][16][17][18]). Usually for lighter nuclei the first Born approximation (FBA) well describes the electron scattering.…”

“…Each model uses different approximations and as a result, the experiments play an important role in verifying the accuracy of theoretical approximations and guiding the calculations. The distorted wave Born approximation (DWBA) is a reliable alternative for more complex many-electron systems, such as heavier noble gas targets, alkali and alkali earth metals [14,15].Theoretical results of Distorted wave born approximation (DWBA) are in better agreement with experiments for electron-impact ionization of various targets at higher energies but still there are many discrepancies between the available theoretical results and experimental data at the low and intermediate incident electron energies [16]. There are several modifications which can be used to improve the theoretical TDCS at lower incident electron energies, such as approximating the post collision interaction (PCI), correlation-polarization effects, electron exchange and inclusion of higher order terms.…”

Low energy electron and positron impact differential cross sections for the ionization of water molecules in the coplanar and perpendicular kinematics

“…In this context, several theoretical models have been developed in last decades to describe the ionization processes at different projectile energies and various geometries. [12][13][14][15][16] Various theoretical models and approximations have been suggested, and experiments play a key role for determining the accuracy of the theoretical approximations.…”