Electron impact ionisation of atomic hydrogen at intermediate energies

CDW theoretical description of the single ionization of argon by positron and electron impact

“…This model was initially developed by Crothers and McCaan for ion-atom collisions [10] and was successfully extended to the light particle impact case. For the intermediate impact energy range, (>150 eV), on the other hand, the CDW-EIS results were close to the Born-CDW results over the set of configurations measured by Ehrhardt et al [11,12]. This showed that the initial state correlation only plays a role as the impact energy decreases.…”

Fivefold differential cross sections for the ionization of aligned hydrogen molecule by electron and positron impact

“…Later on, Popov and Erokhin [48] applied this method to (e + , e + e − ) process as a development of the (e,2e) method. Subsequently, Klar and coworkers [32,49] extended this method to include both trajectory and energy shifts as follows:…”

“…the sum of the projectile-core and projectile-electron interactions) in its phase in an approximate way. In the exit channel we have introduced the post collision interaction (PCI) effect, i.e., projectile-ejected electron correlation in the GA (GA-PCI) following the semiclassical method used by Klar et al [32]. On the other hand, BBK method uses an asymptotically exact scattering wave function which involves three appropriate confluent hypergeometric functions depending on the three pairwise inter-particle Coulomb interactions.…”

Distorted-wave Born Approximation for the Ionisation of Hydrogen by Electrons

“…Lahmam-Bennani et al (1987) find very good agreement between the three methods. Ehrhardt et al (1985Ehrhardt et al ( , 1986, Klar et al (1987), open squares: experimental data of Lohmann et al (1984), solid curve: DWBA (this work), long dashes: coupled pseudostate method (Curran and Walters 1987), short dashes: calculation incorporating the exact three·body boundary condition (Brauner et al 1989). Eo = 250 eV,…”