Oscillation of Gas Density in the Gas Filament Remained by a Streamer Discharge in Water
Oscillation of Gas Density in the Gas Filament Remained by a Streamer Discharge in Water
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水中流光放电留下的气体细丝中气体密度的振荡
DOI：
10.3390/pr9101809
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发表时间：
2021-10
期刊：
影响因子：
3.5
通讯作者：
Yuantian Yang
中科院分区：
文献类型：
--
作者：
Xiaoqiong Wen;Yibing Zhou;Xiaodong Xue;Yuantian Yang
当在水中发生流光放电时，在放电过程中会在水中产生几个发光等离子体细丝。放电后，这些等离子体细丝变成中性气相并留在水中。留在水中的气丝是研究流光传播基本过程的一个很好的对象。在不同的实验条件下，我们研究了流光放电后残留在水中的气丝的演化。我们在一个放电脉冲中记录了八个连续的图像。根据得到的图像测量了气体在气体灯丝中的密度和气体灯丝的半径。我们发现在所研究的范围内，脉冲电压几乎不影响气体灯丝的半径和气体在气体灯丝中的密度。而水的导电性对气丝的半径和气丝中气体的密度有很大影响。随着水的导电性变大，气体细丝的半径变得更粗，膨胀得更快。高压脉冲启动后，在4-39μS的膨胀期内，气丝中残留在水中的气体密度在400-800 kg/m~3之间波动，持续时间为~10μS。脉冲电压和水的电导率都不影响气体灯丝中气体密度的振荡持续时间。
When a streamer discharge occurs in water, several luminous plasma filaments will be created in the water during the discharge. After the discharge, these plasma filaments turn into neutral gas phase and remain in water. The gas filament remained in water is a good object for studying the basic processes involved in the streamer propagation. We investigated the evolution of the gas filaments remained in water after a streamer discharge at different experimental conditions. We recorded eight successive images during one discharge pulse. The density of gas in the gas filament and the radius of the gas filament were measured from the obtained images. We found that the radius of the gas filament and the density of gas in the gas filament are almost not influenced by the impulse voltage within the range studied. While the conductivity of water has strong effect on the radius of the gas filament and the density of gas in the gas filament. The radius of the gas filament becomes thicker and expands faster as the conductivity of water becomes larger. The density of gas in the gas filament remained in water oscillates between 400 to 800 kg/m3 with an duration of ~10 μs during the expansion period of 4–39 μs after the HV pulse starts. Both the impulse voltage and the conductivity of water do not affect the oscillation duration of the density of gas in the gas filament.
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影响因子：
1.5
作者：
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影响因子：
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作者：
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通讯作者：
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影响因子：
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作者：
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