R. Gebarowski et al., R-MATRIX FLOQUET THEORY OF MULTIPHOTON PROCESSES .12. HARMONIC-GENERATION IN MAGNESIUM, Journal of physics. B, Atomic molecular and optical physics, 30(10), 1997, pp. 2505-2515
The newly developed R-matrix Roquet theory of harmonic generation is a
pplied to magnesium in its ground state for the case where three photo
ns are needed to reach the first ionization threshold in the perturbat
ive limit. Results are presented both for multiphoton ionization and f
or harmonic generation where the influence of the low-lying autoionizi
ng states is studied. The results are compared at a qualitative level
with those from recent experiments and from other calculations.