Low-energy electron capture by ${\mathrm{N}}^{3+}$, ${\mathrm{N}}^{4+}$, and ${\mathrm{N}}^{5+}$ from hydrogen atoms using merged beams

Measurements of absolute total cross sections for single-electron capture in collisions of ${\mathrm{N}}^{3+}$, ${\mathrm{N}}^{4+}$, and ${\mathrm{N}}^{5+}$ ions with ground-state atomic hydrogen are reported in the energy region 0.9–1400 eV/amu. Good agreement is obtained with available theoretical calculations and with previous experimental results at the higher energies. None of the systems studied shows a clear signature of the induced-dipole attractive force in enhancing the cross section.