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Increased arc length and stability in a magnetic gliding arc discharge using a cylindrical notched cathode
Plasma Sources Science and Technology ( IF 3.8 ) Pub Date : 2020-05-17 , DOI: 10.1088/1361-6595/ab876f
A G Cunha 1 , R P Ribeiro 1 , V A Ribeiro 1 , C G Zucolotto 1 , M B Cevolani 1 , M A Schettino Jr 1 , E A Khalifa 2 , E Marchiori 3 , A R Labanca 4 , F G Emmerich 1
Affiliation  

Intermediate arc discharge plasmas allow for working with ions at lower temperatures than thermal plasmas and can generate greater selectivity in certain chemical reactions due to the high vibrational and electron temperature. In this paper, a magnetic gliding arc discharge (MGA), which is an intermediate plasma, was developed and is described. The reactor is operated with CO 2 as the working gas, but open to atmosphere. It presents increased arc length and stability by using a cylindrical notched cathode (CNC). The constructed rectangular section of the notch channel on the cylindrical cathode surface allowed the arc to be confined within the channel with enhanced stability. The changes in the cathode geometry allowed the system to reach radial arc length of 40 mm, plasma disc diameter of 102 mm, and from 300 to 400 mA of current. A low cost electro-optical device was set up to determine the arc rotation frequency and is described in detail. Measurements of frequency ...

中文翻译:

使用圆柱形缺口阴极增加了电弧长度并提高了磁性滑动电弧放电的稳定性

中间电弧放电等离子体允许在比热等离子体更低的温度下处理离子,并且由于高的振动和电子温度,在某些化学反应中可以产生更大的选择性。在本文中,开发并描述了作为中间等离子体的磁滑行电弧放电(MGA)。反应器以CO 2作为工作气体运行,但对大气开放。通过使用圆柱形缺口阴极(CNC),可以提高电弧长度和稳定性。圆柱形阴极表面上的槽形通道的矩形结构可将电弧限制在通道内,从而提高稳定性。阴极几何形状的变化使系统达到40 mm的径向电弧长度,102 mm的等离子圆盘直径以及300至400 mA的电流。设置了一种低成本的电光设备来确定电弧旋转频率,并对其进行了详细说明。频率测量...
更新日期:2020-05-17
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