Electron detachment of H^{-} in collision with Ne^{4+} and Ar^{4+} ions

Total-electron detachment cross sections for ${\mathrm{H}}^{\ensuremath{-}}$ colliding with multiply charged ${\mathrm{Ne}}^{4+}$ and ${\mathrm{Ar}}^{4+}$ ions are calculated using the two-center atomic-orbital close-coupling expansion method in the center-of-mass energy range of 4--200 keV. The calculation shows that there is no core effect, and that electron capture only plays a minor role for energies above 20 keV. At 50 keV, where electron capture is not important, the single-center atomic-orbital expansion method was used to calculate the detachment cross sections for incident charges $q=1$--8. The present calculations are shown to be in good agreement with experimental data.

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