Based on the previously explained principles, we must be able
to predict the extent of the space charge limited field (SCLF) to
assess the severity of a defect. For axi-symmetric defects, we
can do this using 2-D transient nonlinear finite element analysis
with field-dependent conductivity. The key parameters in such a
computation are the defect geometry, the background field, and
the space charge limited field of the dielectric.