Multicenter three-distorted-wave approach to three-dimensional images for electron-impact-ionization dynamics of molecules: Overall agreement with experiment

Triple differential cross-section for the twisted electron impact ionization of water molecule

“…The present study can be further extended for a twisted electron beam impact ionization using more sophisticated models, like DWBA, 2CW, BBK, and DS3C, in near future. [14,[19][20][21].…”

“…The TDCS for the molecular orbital of water molecule by twisted electron can be computed from equation (20) together with the transition amplitude T pw f i (q) from the equation (12). The process of ionization of a single molecule by a vortex beam is challenging experimentally.…”

“…* rchoubisa@pilani.bits-pilani.ac.in 1CW model with Gaussian type orbitals (GTO) has also been used to study the TDCS [15]. Different other models, like 1CW (analytical expression) [16,17], generalised Sturmian function (GSF) [18], two molecular three-body distorted wave approach (M3DW) [19], multicenter three distorted waves (MCTDW) [20], second-order distorted wave Born approximation (DWBA2) [21], have also been used. In addition to (e,2e) processes, various theoretical (e,3e) investigations have been done to study the double ionization on H 2 O [22][23][24].…”

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

“…22 The MCDW results show good agreement with the experiment in full three-dimensional kinematics concerning both the angular dependence and the relative magnitude of the cross sections over a large range of analyzed angle and energy conditions for electron impact ionization of water. 23 Whereas the present paper deals with single ionization created by light projectiles, there is also a long history of single ionization created by heavy particle impact. One of the most successful methods for heavy particles is the continuum distorted wave-Eikonal initial state approach state (CDW-EIS) approach of Crothers and McCann.…”

Multicenter continuum-distorted-wave eikonal-initial-state description of the electron-impact ionization of aligned H2 molecules

“…In contrast, distorted wave methods have proved to lead to acceptable results regarding simple targets like H, He and Ar [20][21][22][23][24][25][26], and can be in principle extended to deal with complex molecular targets at a considerably inferior computational cost. Such complex scenario has been mostly explored by means of variations of the distorted-wave-Born-Approximation (DWBA) [27][28][29][30] or variations of the 3C (sometimes termed BBK) model [31][32][33]. The post-collision interaction (PCI) among the projectile and the emitted electron at the wave function level was ei- * emiliano.acebal@uns.edu.ar ther neglected, or modelled by a simple multiplicative factor (such as the Gamow factor or the Ward-Macek factor [34]) that would not affect the computational cost in many of these calculations.…”