Brazilian Journal of Physics
versão On-line ISSN 1678-4448
POMARICO, J.; IRIARTE, D. I. e DI ROCCO, H. O.. An efficient screening approach to be used in plasma modeling and ion-surface collision experiments. Braz. J. Phys. [online]. 2005, vol.35, n.1, pp. 130-135. ISSN 1678-4448. http://dx.doi.org/10.1590/S0103-97332005000100008.
In this work we show that the Layzer theory for atomic calculations provides a theoretical framework and also a powerful computational approach if correct rules for the calculation of the screening parameters are given. Using the virial as a model for potential energy and splitting of two-body operators as sum of onebody operators, a neat definition of screening is given, satisfying diverse physically indispensable properties. Many different experimental and theoretical results are reproduced with high accuracy, with no fitting procedure involving energy levels or numerical potentials. A C++ code and an executable file are available upon request.