High-voltage spark gap in a regime of subnanosecond switching

Yury D. Korolev, Nikolay M. Bykov

    Результат исследования: Материалы для журналаСтатья

    9 Цитирования (Scopus)

    Аннотация

    This paper describes an investigation of a high-voltage spark gap in the conditions of subnanosecond switching. The high-voltage pulsed generator Sinus is used to charge a coaxial line loaded to a high-pressure spark gap. Typical charging time for the coaxial line is in a range from 1 to 2 ns, maximum charging voltage is up to 250 kV, and a range of pressures for the gap is from 2 to 9 MPa. The theoretical models of the switching process on subnanosecond time scale are examined. A general equation for temporal behavior of the gap voltage, which is applicable for the avalanche model and the Rompe-Weitzel model has been obtained. It is revealed that the approach based on the avalanche model offers a possibility to describe the switching process only at extremely high overvoltages. The Rompe-Weitzel model demonstrates a good agreement with the experimental data both for the conditions of static breakdown and for the regime of a high overvolted gap. Comparison of experimental and calculated voltage waveforms has made it possible to estimate an empirical constant in the Rompe-Weitzel model (the price of ionization). This constant is varied from 420 to 920 eV, depending on the initial electric field in the gap.

    Язык оригиналаАнглийский
    Артикульный номер6109356
    Страницы (с... по...)2443-2448
    Количество страниц6
    ЖурналIEEE Transactions on Plasma Science
    Том40
    Номер выпуска10 PART 1
    DOI
    Статус публикацииОпубликовано - 22 окт 2012

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    ASJC Scopus subject areas

    • Nuclear and High Energy Physics
    • Condensed Matter Physics

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