Two-electron capture and stabilization in collisions of C6+ with rare-gas targets at low energy.

Abstract

We measured the probability ${\mathit{R}}_{\mathit{s}}^{2}$ for two electrons to be captured and to remain on the projectile ion during collisions between slow ${\mathrm{C}}^{6+}$ ions and rare-gas targets. The dependence of ${\mathit{R}}_{\mathit{s}}^{2}$ values of these systems on the incident ion velocities has been studied. For He, Ne, and Xe targets, we have obtained high ${\mathit{R}}_{\mathit{s}}^{2}$ values at a projectile energy of 12 keV and a decrease of ${\mathit{R}}_{\mathit{s}}^{2}$ value for increasing projectile energy. The measured ${\mathit{R}}_{\mathit{s}}^{2}$ values in collisions on He are compared with the data evaluated from Auger electron spectra. \textcopyright{} 1996 The American Physical Society.