Calculations of the integrated cross sections in dressed carbon-ion collisions with atomic hydrogen

The two-center wave-packet convergent close-coupling approach is extended to model dressed ion collisions with atomic hydrogen. This is done by reducing the problem to an effective three-body one and using a model potential to approximate the interactions between the projectile ion with the target electron and target nucleus. The method is applied to calculate the total ionization cross section along with the total and $n$-resolved electron-capture and target-excitation cross sections in partially stripped ${\mathrm{C}}^{2+}$ and ${\mathrm{C}}^{3+}$ ion collisions with ground-state atomic hydrogen. Calculations are performed across a broad projectile energy range from 1 keV/u to 1 MeV/u, where one-electron collision processes are dominant. The calculated total electron-capture cross sections for both systems generally agree very well with available experimental and previous theoretical data. We find that at incident energies above 100 keV/u the total electron-capture cross sections in dressed carbon-ion collisions are larger than the ones corresponding to collisions of bare projectile ions of the same charge. A possible reason for this could be associated with the target-electron radial density and the behavior of the potential of interaction between the target electron and the carbon ion. Our results for ionization in ${\mathrm{C}}^{3+}+\mathrm{H}(1s)$ collisions overestimate the experimental data. We also report a set of calculations for ionization in ${\mathrm{C}}^{2+}+\mathrm{H}(1s)$ collisions.

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