Theory of a Flush‐Mounted Probe in a Magnetized Plasma

A problem of a flush-mounted probe in a fully ionized magnetized plasma (such as SOL plasma) is treated analytically and numerically for arbitrary probe size. The model describes the structure of electric field and particle fluxes, as well as the transport processes, in a plasma zone disturbed by the probe. The I-V characteristics and the structure of return current to the electrode are derived on this basis.