CROSS SECTION OF THE THIRD HARMONIC GENERATION ON FLUORINE NEGATIVE ION
V.K.Ivanov, A.V.Korol and M.Yu.Kuchiev
St.Petersburg State Technical University, ST.Petersburg, Russia; Russian
Maritime Technical University, St.Petersburg, Russia; University of New
South Wales, Sydney, Australia
The process of third-order harmonic generation on negative F- ion is
considered within the lowest order of perturbation theory. The
calculations are performed both within the Hartree-Fock approximation and
within the method combining the corrected 2p ground state and the
Hartree-Fock excited state wavefunctions. Results are presented for photon
energies below the two-photon-ionisation threshold.