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Rongxiao ZHAI (翟戎骁), Tao HUANG (黄涛), Peitian CONG (丛培天), Weixi LUO (罗维熙), Zhiguo WANG (王志国), Tianyang ZHANG (张天洋), Jiahui YIN (尹佳辉). Comparative study on breakdown characteristics of trigger gap and overvoltage gap in a gas pressurized closing switch[J]. Plasma Science and Technology, 2019, 21(1): 15505-015505. DOI: 10.1088/2058-6272/aae432
Citation: Rongxiao ZHAI (翟戎骁), Tao HUANG (黄涛), Peitian CONG (丛培天), Weixi LUO (罗维熙), Zhiguo WANG (王志国), Tianyang ZHANG (张天洋), Jiahui YIN (尹佳辉). Comparative study on breakdown characteristics of trigger gap and overvoltage gap in a gas pressurized closing switch[J]. Plasma Science and Technology, 2019, 21(1): 15505-015505. DOI: 10.1088/2058-6272/aae432

Comparative study on breakdown characteristics of trigger gap and overvoltage gap in a gas pressurized closing switch

Funds: This work is supported by the Foundation of State Key Laboratory of Intense Pulsed Radiation Simulation and Effect (No. SKLIPR1601).
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  • Received Date: July 22, 2018
  • Gas pressurized closing switches are one of the most important elements in FLTD-based
    systems. Improving the trigger performance of gas switches is useful for optimizing the output
    parameters and the reliability of the FLTD. In this paper, the breakdown characteristics of the
    trigger gap and the overvoltage gap are studied experimentally. The reasons for the different
    breakdown performance of the two gaps are also investigated. The results show that
    the breakdown delay of the trigger gap is more influenced by the trigger voltage, while the
    breakdown delay of the overvoltage gap is more influenced by the working coefficient and
    always higher than that of the trigger gap. The jitter of the trigger gap is more influenced by the
    trigger voltage and accounts more than 60% of the total switch jitter, while the jitter of the
    overvoltage gap is hardly changed with the trigger voltage as well as the working coefficient and
    maintains less than 1.4 ns. It is proved that the discharging product from the trigger gap can
    effectively reduce the breakdown delay and jitter of the overvoltage gap. Based on that, the effect
    and improvement of pre-ionization on the two gaps are also studied. It is concluded that the jitter
    of the trigger gap reduces obviously when the pre-ionization is added, while the pre-ionization
    almost has no effect on the jitter of the overvoltage gap. The jitter of the overvoltage gap is about
    two times higher than the trigger gap in the pre-ionizing switch.
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