V. G. Melnyk

High-Voltage, glow-discharge electron sources and possibilities of its application in industry for realizing different technological operations

Important problems of generation and forming electron beams in electrode systems of a high-voltage glow discharge are discussed. Also considered are dependencies of energetic parameters on the formed electron beam as well as on anode plasma parameters from the discharge voltage and current. Examples are given of some up-to-date and advanced possibilities of using high-voltage, glow-discharge electron beam sources for achieving different technological operational modes. Output characteristics of elaborate vaporization and welding equipment are discussed as well.

Simulation of dependences of discharge current of high voltage glow discharge electron guns from parameters of electromagnetic valve

The results of simulation the dependences of high voltage glow discharge electron guns current on the parameters of electromagnetic valve are considered in this paper. The valve is considered as the main element of gas-dynamic control system of discharge current. As the result, the analytical relation for approximation the dependence of discharge current on the voltage at the coil of electromagnetic valve is obtained and analyzed.

Principles of operation of high voltage glow discharge electron guns and some possibilities of their technological application

This paper is devoted to describing the basic principles of operation, modeling and possibilities of application of high voltage glow discharge electron guns for realising of different technological operations in the different branches industry. Both diode and triode electrodes systems and particularities of its’ simulation are considered and examples of realizing different technological operations are given.

Theoretical investigation of energetic efficiency of impulse high voltage glow discharge electron sources

This paper is devoted to the theoretical estimations of energetic efficiency of High Voltage Glow Discharge (HVGD) electron sources in the impulse regime of operation. Balance of energy on the discharge electrodes is analyzed, estimation of energy dissipation in anode plasma is also provided. As a result of investigation obtained the analytical relation for calculation the efficiency of HVGD electron sources. Obtained simulation results are in the good agreement with experimental data.

Investigation of emission properties of cold cathodes in triode impulse High Voltage Glow Discharge Electron Guns

Article is devoted to the experimental investigation of ion-electron secondary emission in impulse high voltage glow discharge electron sources. The dependences of secondary ion-electron emission coefficient from the maximal discharge current, acceleration voltage, the voltage on additional electrode, and from frequency of impulses and its duty factor are presented and analyzed.

Investigation of current-voltage and energetic characteristics of triode glow discharge electron guns

This paper is devoted to theoretical analyze of current-voltage and energetic characteristics of triode high voltage glow discharge electron guns, which are very advanced for using in modern electron beam technologies. Regulation of high voltage discharge current is realized by lighting additional low-voltage non-self-maintained discharge. Provided theoretical analyze is based on solving of equation of particles balance in anode plasma with taking into account the condition of discharge self-maintaining. Calculated current-voltage and energetic characteristics for different pressure and voltage of additional discharge are given. Obtained theoretical results are comprised with experimental data.

Obtaining of powerful electron beams in high voltage glow discharges with cold cathodes

Results of investigation and elaboration of glow discharge electron guns with beam power up to 500 kW and greater, oriented to technological applications, arc considered in this report. Energetic characteristics of such electron sources in dependence on discharge parameters and estimations of elaborated flection guns efficiency are given.