Positron and electron impact multiple-ionization of rare gases

29th International Conference on Photonic, Electronic, and Atomic Collisions

Montanari, C.C.^1 ; Miraglia, J.E.^1

Instituto de Astronomia y Fisica Del Espacio, Consejo Nacional de Investigaciones Cientificas y Técnicas, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires

C1428EGA, Argentina^1

关键词: Electron impact;    Energy thresholds;    Finite momentum;    Light projectiles;    Multiple ionization;    Near thresholds;    Theoretical treatments;    Total ionization cross sections;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/635/5/052009/pdf
DOI  :  10.1088/1742-6596/635/5/052009

来源: IOP

【 摘 要 】

We present a theoretical treatment of the multiple-ionization by light projectiles, which is valid in an extended energy range (from near threshold to the keV region). It covers the direct ionization and the post- collisional electron emission, and takes into account charge and mass effects: projectile trajectory, finite momentum transferred, energy threshold. Our results for positron and electron-impact on Ne, Ar, Kr and Xe, are compared with a detailed compilation of experimental data of multiple and of total ionization cross sections. These values and previous ones for antiproton and proton-impact let us to present an extended picture of the particle-antiparticle multiple-ionization.