Please use this identifier to cite or link to this item:
|Title:||Analytical Dirac-Hartree-Fock-Slater screening function for atoms (Z=1-92)|
|Author:||Salvat Gavaldà, Francesc|
Martínez, J. D.
Mayol Sánchez, Ricardo
Parellada Sabata, Juan
|Publisher:||The American Physical Society|
|Abstract:||An analytical approximation, depending on five parameters, for the atomic screening function is proposed. The corresponding electrostatic potential takes a simple analytical form (superposition of three Yukawa potentials) well suited to most practical applications. Parameters in the screening function, determined by an analytical fitting procedure to Dirac-Hartree-Fock-Slater (DHFS) self-consistent data, are given for Z=1¿92. The reliability of this analytical approach is demonstrated by showing that (a) Born cross sections for elastic scattering of fast charged particles by the present analytical field and by the DHFS field practically coincide and (b) one-electron binding energies computed from the independent-particle model with our analytical field (corrected for exchange and electrostatic self-interaction) agree closely with the DHFS energy eigenvalues.|
|Note:||Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevA.36.467|
|It is part of:||Physical Review A, 1987, vol. 36, núm. 2, p. 467-474.|
|Appears in Collections:||Articles publicats en revistes (Física Quàntica i Astrofísica)|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.