Abstract
The double-ionization process, which is mainly governed by the electron-electron correlation effect (static/dynamic), has been studied for the ${\mathrm{Li}}^{+}$ ion by fast electron impact $(e,3e)$ for both symmetric and asymmetric geometries. The correlation effect in the initial channel has been incorporated by choosing a correlated wave function for the ${\mathrm{Li}}^{+}$ ion in its ground state. Some partial account of the dynamic correlation has also been considered in the final channel. The long-range Coulomb attraction in the initial channel arising due to the ionic target has been taken into account in the framework of the Coulomb-Born approximation. The evaluation of the fully differential cross sections finally reduces to a four-dimensional integration which has been evaluated numerically.
Published Version
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