racter,sincethegoalisofinter-
molecularstrong-fieldresponsedepends,atleastforsomemole-
rectimagingofthevalenceelectronsandtheirfield-freedynamics
fieldandreversesitsdirectionasthefielddirectionchanges,and
imagingschemesarebasedonthefirst,theionizationstep.Mea-
theelectronicgroundstateofneutralmolecules.Simplifiedmodels