Hartree-Fock calculations for atoms in strong magnetic fields. I - Energy levels of two-electron systems

摘要: A general approach to N-electron systems in superstrong magnetic fields (B>or approximately=5*105 T) is presented within Hartree-Fock theory. Starting from Slater determinants with single-particle wavefunctions that are products of Landau states and arbitrary longitudinal functions gmi(z), the system equations for self-consistently determining gmi(z) derived, expansions matrix elements electron-nucleus electron-electron interaction which occur between given terms numerically feasible basis functions. The well known Froese-Fischer code had be modified considerably solve HF equations, numerical stability accuracy carefully checked. As a first application ground-state energies helium-like nuclear charges up Z=26 calculated field strengths range 5*105 5*109 T.