The measurements of emission parameters of tungsten thermo cathodes in plasma energetic equipments
About authors
- 1 — Ph.D., Dr.Sci. professor Saint Petersburg State Mining Institute (Technical University)
- 2 — Ph.D. associate professor Saint Petersburg State Mining Institute (Technical University)
- 3 — Postgraduate student Saint Petersburg State Mining Institute (Technical University)
- 4 — Postgraduate student Saint Petersburg State Mining Institute (Technical University)
Abstract
Emission parameters and coefficients of reflection of heat electrons from tungsten thermo cathodes were investigated under nontraditional for emission electronic conditions, when the surface contacts with highly ionized plasma. For measurements plasma diode electron current-magnetic field strength relations were used. Parameter Dj, which characterizes cathode heterogeneity by work function, and coefficient of reflection for policrystallic tungsten and for face 110 tungsten single crystal were measured. Proportion entering in effective reflection coefficient of electrons, reflected immediately from the surface and from potential barrier of spots field was determinate.
Область исследования:
(Archived) Applied and fundamental research in physics and mathematics
Keywords:
coefficients of reflection of heat electrons
emission parameters
policrystallic tungsten and tungsten single crystal thermo cathodes
Funding:
None
References
- Dobretsov L.N. Emission electronics / Dobretsov L.N., Gomoyunova M.V. Moscow, 1966. 564 p.
- Zanberg E.Ya. Surface ionization / Zanberg E.Ya., Ionov N.I. Moscow, 1969. 432 p.
- Mustafaev A.S. Diagnostics methods of anisotropic plasmas in thermionic plasma energetics: Referat … Doctor of Phys.-math. Sci. Obninsk, 2003. 63 p.
- Ender A.Ya. Magnetic method for diagnostics of Knudsen plasmas / A.Ya.Ender, A.S.Mustafaev et all. Leningrad, 1976. 73 p.
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