Measurements of $Q$ Values for ${\mathrm{Al}}^{+}$, ${\mathrm{P}}^{+}$, ${\mathrm{S}}^{+}$, ${\mathrm{Cl}}^{+}$, ${\mathrm{K}}^{+}$, and ${\mathrm{Mn}}^{+}$ on Argon at keV Energies

Inelastic-energy-loss distributions for single collisions of ${\mathrm{Al}}^{+}$, ${\mathrm{P}}^{+}$, ${\mathrm{S}}^{+}$, ${\mathrm{Cl}}^{+}$, ${\mathrm{K}}^{+}$, and ${\mathrm{Mn}}^{+}$ with argon at keV energies have a triple-peaked structure in a limited range of ${\mathcal{r}}_0$ similar to that observed earlier for the homonuclear case ${\mathrm{Ar}}^{+}$ on Ar. In contrast to the homonuclear case, however, the inner-shell excitation for the asymmetric cases takes place almost exclusively in the one of the collision partners with lowest atomic number $Z$.