Scaling rule for target ionization by highly charged ions at low-to-intermediate velocities

Abstract

Cross sections for ionization of He by highly charged ${\mathrm{Cl}}^{\mathit{q}+}$, ${\mathrm{Cu}}^{\mathit{q}+}$, and ${\mathrm{I}}^{\mathit{q}+}$ (q=6--10) impact at velocities from 1.6 to 3.1 a.u. were measured. These results are compared with other experimental and theoretical results available over a wide velocity range. A universal scaling rule for target ionization by nearly bare, highly charged ions at low to intermediate velocities (0.2--3.5 a.u.) is reported. \textcopyright{} 1996 The American Physical Society.