Acoustic spectra characteristics of atmospheric pressure plasma using optical wave microphone

作者：Nakamiya Toshiyuki^*; Mitsugi Fumiaki; Suyama Shota; Ikegami Tomoaki; Ebihara Kenji; Sonoda Yoshito; Iwasaki Yoichiro; Aoqui Shin ichi; Stryczewska Henryka; Pawlat Joanna

来源：Przeglad Elektrotechniczny, 2011, 87(1): 249-253.

• electric discharge
• sound signal
• laser light diffraction
• optical wave microphone

We apply the new method to examine electric discharge sound using Fraunhofer diffraction effect of visible laser beam. This new system is called the optical wave microphone and is very useful for the detection of sound wave without disturbing the sound field. Applied voltage, current and the electrical discharge sound of Coplanar DBD (Dielectric Barrier Discharge) are measured, and the fundamental relationship between the discharge and the acoustic properties is examined. The Fast Fourier Transform (FFT) is applied to discriminate the acoustic sound of the Coplanar DBD discharge and the dominant frequency components.

• 出版日期2011
• 单位中国科学院电工研究所