Abstract
On the basis of the microphysical processes of gas discharge, a mathematical physical model of the corona under damped oscillation impulses is proposed in this study. The effects of collision ionisation, drift of the charged particles, space photoionisation, attachment and recombination are all taken into account in the proposed model. The space photoionisation formula is deduced in a coaxial cylindrical geometry. The charge–voltage characteristics under damped oscillation and double exponential impulses can be computed by the proposed model. The computed results are compared with the measured ones and a better agreement is shown between them. The main difference on the charge–voltage characteristics under the two types of impulses is also investigated by the model computation and experimental measurement.
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