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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Effect of pulse width on the production of radicals and excited species in a pulsed positive corona discharge
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Effect of pulse width on the production of radicals and excited species in a pulsed positive corona discharge

机译：脉冲宽度对脉冲正电晕放电中自由基和激发物种产生的影响

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摘要

The effect of pulse width on the production of various radicals and excited species (OH, O, O_3, OH(A~2), O_2(v)) in a pulsed positive corona discharge is measured. The densities of these species are measured using laser-induced fluorescence, light absorption and optical emission spectroscopy. It is shown that the pulsed corona discharge can be divided into three phases related to the production of radicals and excited species: (i) primary streamer, (ii) earlier part of secondary streamer and (iii) later part of secondary streamer. It is shown that phase (iii) is inefficient for the production of most of the radicals and excited species. Therefore, a short pulse is desirable for efficient production of radicals and excited species to cut off the inefficient later part of the secondary streamer.
机译：测量了脉冲宽度对脉冲正电晕放电中各种自由基和激发物种（OH，O，O_3，OH（A〜2），O_2（v））产生的影响。使用激光诱导的荧光，光吸收和光发射光谱法测量这些物质的密度。结果表明，脉冲电晕放电可分为与自由基和受激物质产生有关的三个阶段：（i）初级拖缆，（ii）次级拖缆的较早部分，和（iii）次级拖缆的较晚部分。结果表明，相（iii）对于大多数自由基和受激物种的产生效率低下。因此，为了有效地产生自由基和激发的物质以切断次级拖缆的低效率的后半部分，需要短脉冲。

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