Electrical breakdown dynamics in an argon bubble submerged in conductive liquid for nanosecond pulsed discharges
Electrical breakdown dynamics in an argon bubble submerged in conductive liquid for nanosecond pulsed discharges
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浸没在导电液体中进行纳秒脉冲放电的氩气泡的电击穿动力学
DOI：
10.1088/1361-6463/acfb1b
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Stapelmann, Katharina
中科院分区：
文献类型：
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作者：
L Sponsel, Nicholas;Gershman, Sophia;Stapelmann, Katharina
这项研究深入研究了冷大气等离子体的动力学及其在纳秒脉冲放电的独特条件下（22 kV 峰值电压、10 ns FWHM、4.5 kV ns−1 上升率）下导电溶液中的相互作用。该研究的重点是浸没在不同电导率的氯化钠溶液中的氩气泡中的电响应、击穿和放电传播。在电导率为 1.5 µS cm−1（去离子水）至 1.6 mS cm−1 时观察到完全放电或部分放电，但当减小电极间隙时，在 11.0 mS cm−1 时未观察到击穿。结果表明，在较高的电导率下，仅当气泡与电极直接接触时才会观察到电击穿，并且在不同的时间尺度上观察到多个发射节点。这些节点在气泡中心区域扩展的时间尺度比初始高压脉冲更长。这项工作在初始电压脉冲的前 30 ns 内提供了 2 ns 曝光时间的时间分辨率，并深入了解了 200 ns 内衰减反射电压振荡期间的等离子体形成。
This study delves into the dynamics of cold atmospheric plasma and their interaction within conductive solutions under the unique conditions of nanosecond pulsed discharges (22 kV peak voltage, 10 ns FWHM, 4.5 kV ns− 1 rate-of-rise). The research focuses on the electrical response, breakdown, and discharge propagation in an argon bubble, submerged in a NaCl solution of varying conductivity. Full or partial discharges were observed at conductivities of 1.5 µS cm− 1 (deionized water) to 1.6 mS cm− 1, but no breakdown was observed at 11.0 mS cm− 1 when reducing the electrode gap. It is demonstrated that at higher conductivity electric breakdown is observed only when the gas bubble comes into direct contact with the electrode and multiple emission nodes were observed at different timescales. These nodes expanded in the central region of the bubble over timescales longer than the initial high-voltage pulse. This work offers a temporal resolution of 2 ns exposure times over the first 30 ns of the initial voltage pulse, and insight into plasma formation over decaying reflected voltage oscillations over 200 ns.
非均匀脉冲电场中的液体电介质
DOI：
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发表时间：
2016
期刊：
影响因子：
--
作者：
M. Shneider
通讯作者：
M. Shneider