About mm-Wave Plasma Diagnostics in the Stand with Plasma Gun

The possibility of plasma diagnostic was described using the mm-wave interferometer technique for the developed stand with the plasma gun. The high-density plasma can be produced by the arc discharge in the vacuum chamber in a wide pressure range and discharge circuit parameters. The possible plasma density has been estimated, the values of which can be compared with plasma in a tokamak. An appropriate functional scheme of mm-wave interferometer was developed and tested using standard metal waveguide components and quasioptic antenna at the base of oversized metal waveguide.