PLASMA-SCREENING EFFECTS ON SEMICLASSICAL IONIZATION PROBABILITIES FOR THE ELECTRON-IMPACT IONIZATION OF HYDROGENIC IONS IN DENSE-PLASMAS

Plasma-screening effects are investigated on semiclassical ionization probabilities for electron-impact ionization of hydrogenic ions in den se plasmas. The projectile-target interaction Hamiltonian is obtained by an appropriate form of the non-spherical Debye-Huckel model. Semicl assical straight-line trajectory method is applied to the projectile p ath in order to visualize the ionization probability in dense plasmas as a function of the impact parameter and Debye length. The final stat e of the ejected electron is represented by a plane wave solution norm alized in the energy scale. The plasma-screening effect on the ionizat ion probability is appreciably increased with increasing projectile en ergy. The maximum position of the ionization probability recedes from the nucleus as the projectile energy increases.