Plasma–liquid interaction during a pulsed vacuum breakdown / S. A. Barengolts, I. V. Uymanov, V. I. Oreshkin [et al.]
Уровень набора: Journal of Applied PhysicsЯзык: английский.Страна: .Резюме или реферат: The dynamics of phase changes in the material of a copper cathode during the explosion of a microprotrusion on its surface under the action of the explosive electron emission current has been numerically simulated. Numerical data have been obtained that characterize the interaction of the liquid metal and the dense cathode plasma that are formed due to the microprotrusion explosion. It has been shown that, under the action of the pressure exerted by the plasma, the liquid metal is almost completely displaced from the zone of operation of the cathode spot of the vacuum discharge. This leads to the formation of a crater on the cathode surface with microirregularities at its edge. Thus conditions are created for the formation of new microprotrusions, which, when exploding, provide self-sustained and cyclic operation of the vacuum discharge..Примечания о наличии в документе библиографии/указателя: [References: 39 tit.].Тематика: электронный ресурс | труды учёных ТПУ | воздействие | плазма | импульсный пробой | численное моделирование | фазовые изменения | жидкие металлы | вакуумные разряды Ресурсы он-лайн:Щелкните здесь для доступа в онлайнTitle screen
[References: 39 tit.]
The dynamics of phase changes in the material of a copper cathode during the explosion of a microprotrusion on its surface under the action of the explosive electron emission current has been numerically simulated. Numerical data have been obtained that characterize the interaction of the liquid metal and the dense cathode plasma that are formed due to the microprotrusion explosion. It has been shown that, under the action of the pressure exerted by the plasma, the liquid metal is almost completely displaced from the zone of operation of the cathode spot of the vacuum discharge. This leads to the formation of a crater on the cathode surface with microirregularities at its edge. Thus conditions are created for the formation of new microprotrusions, which, when exploding, provide self-sustained and cyclic operation of the vacuum discharge.
Российский фонд фундаментальных исследований 20-08-00378
Российский фонд фундаментальных исследований 19-08-01004
Российский фонд фундаментальных исследований 20-21-00036
Российский научный фонд 20-19-00323
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