SingleParameter FreeElectron Exchange Approximation in Free Atoms
Abstract
The optimum scale factor for the Slater freeelectron exchange approximation for atoms has been obtained by minimizing the total electronic energy. In general, the scale factor lies between the Slater and the GasparKohnSham limit of 1 and 23, respectively. The variation that occurs as the different shells are populated is qualitatively understandable in terms of the inhomogeneity of the overall charge distribution.
 Publication:

Physical Review A
 Pub Date:
 January 1970
 DOI:
 10.1103/PhysRevA.1.37
 Bibcode:
 1970PhRvA...1...37K