Sensitivity of SGEMP Response to Input Parameters

Investigations into the sensitivity of SGEMP responses of simple geometries to various input parameters are made using the arbitrary body-of-revolution code ABORC. In particular, sensitivity of the response to emitted electron energy and angular distributions, emission levels, time dependence of the energy spectrum, time-phasing, and the choice of emission surfaces is investigated. Sensitivity to time-phasing, the choice of emission surfaces, and the time dependence of the energy spectrum is found to be relatively large, while sensitivity to energy and angular distributions and total yield variations arising from differences between the various emission predictive techniques and experiments is found to be relatively small. Electron emission codes now in existence appear to be adequate for predicting SGEMP responses, at least in the energy range above 1 keV.