A Phenomenological Approach to Cable SGEMP Modeling

A cable SGEMP model is developed for calibration against low and high fluence data. This model includes localized gaps and nonlinear effects of radiation-induced conductivity and voltage limiting. These latter two effects can be represented as separable time constants of the system. An analytic solution is obtained in terms of total gap volume and a fundamental time constant. The total gap volume is obtainable from low fluence data. Three nonlinearity numbers are defined which are potentially experimentally measurable at high fluence and determine the fundamental time constant.