SCA CALCULATIONS OF THE PROTON-INDUCED ALIGNMENT USING RELATIVISTIC HARTREE-FOCK WAVE-FUNCTIONS

Proton-induced differential and total alignment is reviewed and some c alculations presented. A density matrix formalism is employed as the t heoretical framework and a more efficient expansion into state multipo les used. The collision T-matrix elements entering the expression for the alignment tensor are calculated in the semiclassical approximation to first order. A coordinate space formulation including classical hy perbolic trajectories for the projectile path is adopted here, to take proper account of deflection. Relativistic Hartree-Fock orbital wavef unctions for bound and continuum electronic states in the partial-wave expansion cover both screening and relativistic effects in the atom i n a unifying scheme. The continuum orbitals are calculated iteratively until the frozen core V(N-1) potential converges.