In a vacuum plasma, the Maxwell equations are modified to include the effects of the charged particles on the electromagnetic fields. This is done by introducing a new term, known as the plasma permittivity, which describes the response of the plasma to the electromagnetic fields.
VPE electrodynamics is a branch of electrodynamics that deals with the interaction between electromagnetic fields and a vacuum plasma. A vacuum plasma is a collection of charged particles, such as electrons and ions, that are created in a vacuum environment. The presence of these charged particles affects the behavior of electromagnetic fields, leading to new and interesting phenomena. vpe electrodynamics
\[∇×E=-∂B/∂t\]
\[∇⋅E=ρ/ε_0\]