S. Cohen, T.O. Sedgwick, et al.
MRS Proceedings 1983
A very simple derivation is given of the ionization probability P − for negative ions sputtered off a metal surface. The result P −≈e−(ϕ−A)/cv⊥ shows the experimentally observed dependences on work function ϕ, atomic affinity A, and outwards velocity v ⊥. Estimates of c show good agreement with experiment, too. The physical picture behind the process is discussed. © 1983 IOP Publishing Ltd.
S. Cohen, T.O. Sedgwick, et al.
MRS Proceedings 1983
Julian J. Hsieh
Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
P. Alnot, D.J. Auerbach, et al.
Surface Science
H.D. Dulman, R.H. Pantell, et al.
Physical Review B