论文标题
使用RF脉冲调制激发螺旋形氩气大气压力等离子体射流
Excitation of helical shape argon atmospheric pressure plasma jet using RF pulse modulation
论文作者
论文摘要
本文报告了使用脉冲调制的13.56 MHz射频（RF）电源的螺旋氩气压等离子射流激发。在开放环境空气中观察到这种螺旋结构，该空气与传统的圆锥形形状有很大不同。该螺旋结构起源于脉冲调制RF（2 kHz调制频率（FP））引起的排放区域的周期性压力变化，并将下游传播到环境空气中。使用光学成像探索了观察到的结构的几何特性。此外，研究了调制脉冲的各种输入参数，占空比（d），气体流量（q）和RF功率（p）对螺旋结构形成的影响。这些螺旋结构对等离子体喷射化学特征（增强活性氧和氮种（RONS））的意义，因为它们与各种血浆应用所需的空气夹带增加了进入的电离区域。
The article reports the excitation of a helical argon atmospheric pressure plasma jet using a pulse modulated 13.56 MHz radiofrequency (RF) power source. This helical structure is observed in open ambient air which is far different from the conventional conical shape. This helical structure originates due to the periodic pressure variation in the discharge region caused by pulse modulated RF (2 kHz modulation frequency (fp)) and propagates downstream into the ambient air. The geometrical characteristics of the observed structure are explored using optical imaging. Moreover, the influence of various input parameters viz., duty cycle (D), gas flow rate (Q), and RF power (P) of the modulated pulse on the formation of helical structure are studied. These helical structures have an implication on the plasma jet chemical features (enhancement of reactive oxygen and nitrogen species (RONS)) as these are involved in increase in air entrainment into the ionization region desired for various plasma applications.
