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Vol 187
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The measurements of emission parameters of tungsten thermo cathodes in plasma energetic equipments

A. S. Mustafaev1
N. S. Pshchelko2
A. V. Morin3
A. B. Tsyganov4
About authors
  • 1 — Saint Petersburg State Mining Institute (Technical University)
  • 2 — Saint Petersburg State Mining Institute (Technical University)
  • 3 — Saint Petersburg State Mining Institute (Technical University)
  • 4 — Saint Petersburg State Mining Institute (Technical University)
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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.

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  1. Добрецов Л.Н. Эмиссионная электроника / Л.Н.Добрецов, М.В.Гомоюнова. М., 1966. 564 с.
  2. Занберг Э.Я. Поверхностная ионизация / Э.Я.Занберг, Н.И.Ионов. М., 1969. 432 с.
  3. Мустафаев А.С. Методы диагностики анизотропной плазмы в термоэмиссионной плазменной энергетике: Автореф. … д-ра физ.-мат. наук / ОНТИ ФЭИ. Обнинск, 2003. 63 с.
  4. Эндер А.Я. Метод магнитной диагностики кнудсеновской плазмы / А.Я.Эндер, А.С.Мустафаев и др. Л., 1976. 73 с.

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