Development of a new atmospheric pressure cold plasma jet generator and application in sterilization
Development of a new atmospheric pressure cold plasma jet generator and application in sterilization
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DOI：
10.1088/1009-1963/15/7/028
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发表时间：
2006-07-01
期刊：
影响因子：
--
通讯作者：
Zhang Wen-Rui
中科院分区：
文献类型：
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作者：
Cheng Cheng;Liu Peng;Zhang Wen-Rui
本文报道了一种新型的常压等离子体发生器，它由两根同心圆柱形全金属管组成，成功地产生了冷等离子体射流。内管电极接地，外管电极连接高压电源，外管电极上覆盖介质层。当反应堆采用常压低频(6 kHz~20 kHz)交流电源工作，放电气体稳定地通过管内电极送入空气中时，冷等离子体射流被吹入空气中，等离子体气体温度仅为25~30℃。本文给出了等离子体射流对大肠杆菌和枯草芽孢杆菌的初步净化结果，并对等离子体射流的光发射进行了分析。等离子体射流产生的臭氧浓度为1.0×10(16)cm(-3)，这是通过紫外吸收光谱获得的。
This paper reports that a new plasma generator at atmospheric pressure, which is composed of two homocentric cylindrical all-metal tubes, successfully generates a cold plasma jet. The inside tube electrode is connected to ground, the outside tube electrode is connected to a high-voltage power supply, and a dielectric layer is covered on the outside tube electrode. When the reactor is operated by low-frequency (6 kHz-20 kHz) AC supply in atmospheric pressure and argon is steadily fed as a discharge gas through inside tube electrode, a cold plasma jet is blown out into air and the plasma gas temperature is only 25 - 30 degrees C. The electric character of the discharge is studied by using digital real-time oscilloscope (TDS 200-Series), and the discharge is capacitive. Preliminary results are presented on the decontamination of E. colis bacteria and Bacillus subtilis bacteria by this plasma jet, and an optical emission analysis of the plasma jet is presented in this paper. The ozone concentration generated by the plasma jet is 1.0 x 10(16) cm(-3) which is acquired by using the ultraviolet absorption spectroscopy.