ION FRACTIONS OF LOW-ENERGY NE (E0 LESS-THAN 10 KEV) SCATTERED FROM A COPPER SINGLE-CRYSTAL

Measurements of the ion fraction using the time of flight (TOF) technique, of low energy Ne (5-10 keV) scattered from a Cu (100) face are reported. The scattering angle θ is 30°. The scattering plane is in the 〈100〉, 〈110〉, 〈210〉 and 〈310〉 directions respectively. The ion fraction as a function of the final energy of the scattered particles has about the same shape as the ion spectrum: single and double collisions can be distinguished. Also there is a small difference between the energies of the scattered ions and neutrals in the single collision peak. The ion fractions indicate an increasing re-ionization during the scattering process as function of E0. © 1979.