Target Dependence of Single-Electron-Capture Cross Sections for Slow Be, B, C, Fe, Ni, and W Ions Colliding with Atomic and Molecular Targets

Single-electron-capture cross sections ₁₀ for W⁺ projectile ions on Ar and Kr atomic gas targets at 10 keV (55 eV/u) and on H₂, D₂, CH₄, C₂H₆, and C₃H₈ molecular gas targets at between 5.0 and 10 keV (27 and 55 eV/u) were experimentally derived for the first time. With our published single-electron-capture cross sections _{q q-1} for Be^q+, B^q+, C^q+ , Fe^q+ , Ni^q+ , and W^q+ (q = 1 for Fe; q = 1,2 for the others) ions in low energy, an attempt was made to draw scaling behavior of single-electron-capture cross sections for such slow low-q ions on target species. Established scaling formulas are found to reproduce the measured cross sections generally within a magnitude and with higher precision for specific initial charge state and target species.