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Russian Physics Journal

, Volume 57, Issue 3, pp 370–375 | Cite as

Parameters of High-Temperature Diffusion and Evaporation of Alloying Elements of Thermal Emission Cathodes

  • B. D. Tsydypov
Plasma Physics
  • 31 Downloads

In a joint statement, nonlinear thermal and diffusion problems are solved by a numerical method to analyze the processes of heat and mass transfer and evaporation of activators of thermal emission cathodes for high-current plasma systems. For the two-dimensional diffusion problem, the boundary conditions are strictly formulated and nonlinear temperature dependences of the diffusion coefficients and evaporation rates of emissive and alloying elements are considered. Various mechanisms of activator diffusion are also studied together with the main regularities of heat and mass transfer and activator evaporation as functions of the system parameters.

Keywords

diffusion evaporation activator thermal cathode low-temperature plasma generator 

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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  1. 1.Institute of Physical Materials Science of the Siberian Branch of the Russian Academy of SciencesUlan-UdeRussia

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