Electron loss from 0.74- and 1.4-mev/u low-charge-state argon and xenon ions colliding with neon, nitrogen, and argon

摘要: Absolute total-, single-, and multiple-electron-loss cross sections are measured for $({\mathrm{Ar}}^{+}\ensuremath{-},$ ${\mathrm{Ar}}^{2+}\ensuremath{-},$ ${\mathrm{Xe}}^{3+})\ensuremath{-}(\mathrm{Ne},$ ${\mathrm{N}}_{2},$ Ar) collisions at 0.74 1.4 MeV/u. In addition, a many-body classical trajectory Monte Carlo model was used to calculate total- ${\mathrm{Ar}}^{+}$ impact. For ${\mathrm{N}}_{2}$ Ar targets, excellent agreement between the calculated is found; Ne target experimental data approximately 40% smaller than theoretical predictions. The also examine cross-section scaling characteristics electron loss from fast, low-charge-state, heavy ions. It shown that multiple increased mean charge states of outgoing argon xenon ions by 2 3 respectively. decreased with increasing number electrons lost scaled roughly as inverse sum ionization potentials required sequentially remove most weakly bound, next etc., electrons. This found be independent projectile, incoming state, target. total nearly constant function initial projectile state. As impact energy, predictions yield an ${E}^{\ensuremath{-}1/3}$ behavior 0.5 30 MeV/u sections. Within error bars, consistent this energy dependence but ${E}^{\ensuremath{-}1/2}$ dependence.