  We have calculated the resonant and nonresonant contributions to attosecond
impulsive stimulated electronic Raman scattering (SERS) in regions of
autoionizing transitions. Comparison with Multiconfiguration Time-Dependent
Hartree-Fock (MCTDHF) calculations find that attosecond SERS is dominated by
continuum transitions and not autoionizing resonances. These results agree
quantitatively with a rate equation that includes second-order Raman and
first-and second-order photoionization rates. Such rate models can be extended
to larger molecular systems. Our results indicate that attosecond SERS
transition probabilities may be understood in terms of two-photon generalized
cross sections even in the high-intensity limit for extreme ultraviolet
wavelengths.
