Electromagnetic fields formed upon the interaction of ionizing radiation with matter

We propose a new approach to electromagnetic field calculations that involves the consecutive application of both quantum and classical electrodynamics methods. A current’s distribution is calculated via simulation modeling, using cross-section values obtained through quantum electrodynamics. The classical delayed potential of a current pulse of arbitrary form and duration, moving in a straight line at hyperlight velocity in the space-time representation, is calculated in an explicit form.