Plasma Screening of Funnel Fields

A plasma screening factor has been added to the McLean-Oldham effective funnel length model. Based on the skin depth concept, the factor is intended to provide for plasma screening of funnel fields in heavy-ion tracks crossing reverse-biased silicon and gallium arsenide junctions. Comparisons between screened-funnel predictions of prompt charge collection and experimental data show improved predictive accuracy at low and intermediate values of junction bias.