Thesis for a Candidate
of Sciences degree by speciality 01.04.04 – Physical Electronics.
–
The Institute of Physics of National Academy of Sciences of Ukraine, Kiev,
1997.
Summary
The dissertation is
devoted to the theoretical and computational research of the physical
processes in cathodic region of the electric arc in vacuum. It was
developed the self–susteined physical and mathemetical models for the
processes on the cathode surface, in the near–cathode plasma and the
cathode bulk.
The influence on the
F–T electron emission of the electrical field of the individual ions
(I–F–T mechanism), incoming to the surface from the plasma, is
investigated in details.
The parameters of the
near–cathode plasma and the computing simulation results for the dynamics,
structure and parameters of cathode spot are presented.
It was developed
software for computer modeling of thermal
processes, the plasma-electrode interaction
and multicomponent plasma calculation, the
thermo--field (TF) electron emission in most general approach to
calculation of electron emission current dencity and Nottingham
effect and some others.
Key words:
vacuum electric arc, cathode phenomena, cathode spot, electron emission.
