Parcourir par auteur 

Voici les éléments 1-2 de 2

    • Electron-impact ionization of atomic hydrogen: dynamical variational treatmentPeer reviewedClosed access 

      2011, LECOINTRE, Julien; Defrance, P.; Kereselidze, T.; Machavariani, Z.S., HENALLUX
      Article scientifique
      A simple and straightforward calculating scheme is proposed for electron-impact single and multiple ionization of atoms. The method is based on the application of the Hulthén-Kohn dynamical variational principle. An effective charge seen by the scattered electron is determined for a certain type of trial wave functions mathematically in a rigorous way excluding any empirical assumptions. Validity ...

    • Screening effects and total cross sections of single, double and triple ionization of neon by fast electronsPeer reviewedClosed access 

      2008, LECOINTRE, Julien; Defrance, P.; Jureta, J.J.; Kereselidze, T.; Machavariani, Z.S., HENALLUX
      Article scientifique
      The Bethe–Born theory is applied to estimate the effective charges experienced by the ejected electrons at single, double and triple ionization of neon by fast electrons. The expansion coefficients appearing in the asymptotic expressions for total cross sections σn+ ~ [an+ln(Ei/In+) + bn+]/Ei are determined by fitting to these expressions the experimental data for single and multiple ionization of ...