RADIATION CONDITIONS FOR THE TIME-DEPENDENT SCHRODINGER-EQUATION - APPLICATION TO STRONG-FIELD PHOTOIONIZATION

Radiation conditions are introduced as an exact method to truncate num erical solutions of the time-dependent Schrodinger-equation at the bou ndaries of the numerical grid. A rigorous derivation of radiation cond itions is given by the Green-function method for one- and three-dimens ional regions. An accurate finite-difference representation is obtaine d for a one-dimensional region. The method is applied to calculations of strong-field photoionization. The calculation of ionization probabi lities and energy spectra by the truncated solution is illustrated.