DENSITY-FUNCTIONAL CALCULATION FOR DOUBLY-EXCITED AUTOIONIZING STATESOF HELIUM ATOM

Several doubly excited autoionizing states of He have been calculated within the density functional framework by employing the Harbola-Sahni exchange potential. Correlation effects have been incorporated in the total effective potential through a Wigner-type correlation potential . Although continuum functions are not explicitly incorporated into th ese calculations, resonance energies of these states are in satisfacto ry agreement with other theoretical results. (C) 1996 American Institu te of Physics.