IEMP Cable Coupling Phenomenology in Small Enclosures

Experiments were performed to measure IEMP coupling to cables in small cavities for non-space-charge limited conditions. The experiments were designed to separate the magnetic field, electric field, and charge deposition coupling modes. Investigations were made of the effects of cavity pressure, cable bias potential, and cable type and termination. A theoretical model was developed which represents the various coupling modes by voltage and current sources in a lumped-parameter equivalent circuit. Theoretical predictions were compared to the experimental data. For the configurations investigated the predictions agree with the data to within the experimental uncertainty.