Total electron yields and stopping power of protons colliding with   NaCl-type insulator surfaces II
  We re-calculate electron yields and stopping power of protons colliding with surfaces of NaCl-type insulators. In this article, the projectile is considered to move taking into account the static and polarization potentials with all the individual ions forming the surface lattice unlike our previous work (Phys. Rev. A 75, 042904 (2007)) where the projectile was considered to move in an homogeneous planar potential. Substantial differences (up to forty percent of increment) have been found especially when the projectile incident angle approaches the critical one. We compare our prediction for electron yield and stopping power with the available experimental data for LiF, KI and KCl. 
Andrea J. Garcia and J. E. Miraglia