Short communicationOn an improved model of a complex optical potential for electron elastic scattering

Empirical scaling functions of the type suggested by Lee et al. [M.-T. Lee, I. Iga, L.E. Machado, L.M. Brescansin, E.A. y Castro, I.P. Sanches, G.L.C. Souza, J. Electron Spectrosc. Relat. Phenom. 155 (2007) 14] for the quasifree-scattering model are tested. The parameters of the scaling function have been fitted by using the genetic algorithm to reproduce the experimental data for the elastic scattering of electrons by helium, neon and argon atoms at impact energies 20-3000 eV. The results confirm the effectiveness of the model.