Journal of Mathematical Chemistry

Texto completo: acesso restrito. p.1-13We show that the modified partitioning procedure can be applied to study the spherical and nonspherical Stark effect in the hydrogen atom and the spherical quadratic Zeeman effect in H-, the helium atom and He‐like ions: Li++, Be++, etc. We present ground‐state energy values for γ (in a.u.) in the interval 0.001 ≤ λ ≤ 0.2 (a.u.= 5.142·109 volts/cm) and for magnetic field γ (in a.u.) in the interval 0.1 ≤ γ ≤ 1.0 (a.u. = 2.353·109 gauss). We compare our results to values available in the literature; they are, in general, better than those obtained by other methods