Adaptive node techniques for short pulse electromagnetic modeling

Summary form only given, as follows. Very short duration electromagnetic pulses are important in a wide variety of situations that include exo-atmospheric-generated EMP, ultra short pulse lasers, radar, and cross talk on integrated circuits. In an effort to overcome the grid generation challenge by letting the code build resolution in the most active regions, a new algorithm has emerged that promises adaptive resolution of the pulse and various various geometric elements. These adaptive node techniques, in a model called aETHER, have now been applied to the Lorentz gauge Maxwell's equations and have proven able to identify and concentrate on emerging features. Most recently, these concepts have been applied to a modified set of EM field equations wherein the Poisson equation has been replaced by the zero-electron-mass momentum equation. A discussion of these concepts and the result of test cases are presented.