Investigation of high voltage glow
discharge electrode's systems optic by using an image analyzing
computer method

V. I. Melnik, I. V. Melnik
National Technical University of Ukraine "Kiev Polytechnic Institute", Ukraine, Kiev

The main singularity of electron-optical systems based on high-voltage glow discharge is an existing of moving plasma boundary which is a source of positive ions and can be considered as a moving electrode with the near-anode potential. For analysing of such electron-optical systems experimental data about plasma boundary form and position is used. Making photographs of discharge in a standard electrode's systems its scanning and brightness analyse are provided for obtaining that data. The node points of the boundary between the near-cathode dark region and anode plasma was defined in the places of brightness increasing, if the values of brightness getting in direction from cathode to anode. Between the nodes obtained curves were interpolated by using cube splines. The test calculations have been provided for standard high-voltage glow discharge electron optical systems.