Multiple ionization of Ne induced by 10 keV/u–500 keV/u C ^{q +} ( q = 1–3) ions

Abstract

The values of cross-section ratio Rk1 of direct k-fold ionization cross section (σ k) to direct single ionization cross section (σ 1) of Ne impacted by Cq+ (q = 1–3) ions in an energy range of 10 keV/u–500 keV/u are measured in this work. The experimental data are compared with the results from our multi-electron classical over-barrier ionization (ME-COBI) model, showing that the model can give a good estimate to the experimental data.

Understanding charge transfer of Li + and Na + ions scattered from metal surfaces with high work function

“…All these aspects have motivated intensively experimental and theoretical investigations. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] In general, resonant charge transfer (RCT) is considered experimentally and theoretically to be much more efficient in neutralization of alkali-metal ions scattered from metal surfaces. Resonant neutralization of alkali-metal ions on a metal surface involves a tunneling transition of an electron from an occupied level of the valence band to the atomic level of the projectile [i.e., Li (2s)] as it approaches the surface.…”