Microsecond pulse gas–liquid discharges in atmospheric nitrogen and oxygen: Discharge mode, stability, and plasma characteristics,Plasma Processes and Polymers

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Microsecond pulse gas–liquid discharges in atmospheric nitrogen and oxygen: Discharge mode, stability, and plasma characteristics
Plasma Processes and Polymers ( IF 2.9 ) Pub Date : 2020-10-05 , DOI: 10.1002/ppap.202000135
Sen Wang ₁ , Yawei Liu ₂ , Renwu Zhou ₂ , Feng Liu ₁ , Zhi Fang ₁ , Kostya (Ken) Ostrikov ₃ , Patrick J. Cullen ₂

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A plasma's working gas is a significant factor affecting their discharge characteristics and the induced chemistries during plasma–water interactions. However, the effects on the discharge mode and discharge stability have not been fully investigated. This study focuses on the discharge mode transition and stability with nitrogen and oxygen gases. Compared with the oxygen discharge, the nitrogen discharge remained stable over a larger voltage range and long duration time. A diffuse mode discharge had better stability and lower plasma activity for both nitrogen and oxygen gases, whereas a transient spark mode in nitrogen and filament mode in oxygen had lower stability but a higher plasma activity. This study improves the understanding of the physicochemical processes of plasma–water interactions.

中文翻译：

大气氮氧中的微秒脉冲气液放电：放电模式、稳定性和等离子体特性

等离子体的工作气体是影响其放电特性和等离子体-水相互作用过程中诱发化学反应的重要因素。然而，尚未充分研究对放电模式和放电稳定性的影响。本研究侧重于氮气和氧气的放电模式转换和稳定性。与氧气放电相比，氮气放电在更大的电压范围和较长的持续时间内保持稳定。对于氮气和氧气，扩散模式放电具有更好的稳定性和更低的等离子体活性，而在氮气中的瞬态火花模式和在氧气中的灯丝模式具有更低的稳定性但更高的等离子体活性。这项研究提高了对等离子体-水相互作用的物理化学过程的理解。

更新日期：2020-10-05

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