Electron Kinetic Energies in Multicapture Processes in Xe30+ – C60 Collisions

Abstract

Electron multicapture processes at large impact parameters have been studied for collisions between 150 keV Xe30+ (v ≈ 0.2 a.u.) and C60. By detecting the number of ejected electrons in coincidence with an outgoing Xe28+ ion and a C60r+ ion (3 ≤ r ≤ 6) we have obtained electron spectra corresponding to the ejection of (r - 2) electrons in the continuum. Experiments have been performed for several extraction fields and the electron collection probability has been extracted from each spectrum. A charge trajectory simulation allows an estimation of the kinetic energy distribution of the ejected electrons. We find that most of the detected electrons have energies less than 100 eV.