Acoustic waves effect on the generation of nitrogen oxides by corona discharge in air

作者：Balek R^*; Pekarek S

来源：Plasma Sources Science and Technology, 2018, 27(7): 075019.

DOI：10.1088/1361-6595/aad10d

• corona discharge
• acoustic waves
• nitrogen oxides

We studied the interaction of acoustic waves with negative corona discharge in air at atmospheric pressure. The application of acoustic waves on the discharge causes a mixing of ambient air with the gas between the electrodes, which results in cooling of the gas in the interelectrode gap. As a rough indirect indicator of the discharge cooling, we used a concentration of nitrogen oxides generated by the discharge. We chose these oxides because they exhibit antibacterial properties. We showed that for a particular discharge power with increasing amplitudes of acoustic displacements, the concentration of generated nitrogen mono/dioxide decreases, and that this decrease could be attributed mainly to the temperature. We also found that application of acoustic waves on the discharge for a particular power substantially decreases transient spark frequency, increases the magnitude of the streamer onset voltage, and increases the difference between the streamer and spark onset voltage.

• 出版日期2018-7