Comparisons of quasi-static and fully dynamic solutions for electromagnetic field calculations in a cylindrical cavity

A fully dynamic, self-consistent computer code has been developed to solve internal electromagnetic pulse (IEMP) problems in cylindrical geometries excited by a pulse of ionizing radiation. Comparisons between the fully dynamic and previous quasi-static solutions are made, and the range of validity of the quasi-static approximation is defined. Results show that non-linear effects arising from field-perturbed electron motion significantly affect the range of validity of the quasi-static approximation.