Striation phenomena in a low temperature atmospheric pressure neon plasma jet by optical emission spectroscopy
Striation phenomena in a low temperature atmospheric pressure neon plasma jet by optical emission spectroscopy
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DOI：
10.1063/1.5124122
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发表时间：
2020-02
影响因子：
2.2
通讯作者：
Hiromasa Yamada;S. Kato;T. Shimizu;M. Fujiwara;Y. Fujiwara;Jaeho Kim;Sanae Ikehara;Nobuyuki Shimizu-Nobuyu
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文献类型：
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作者：
Hiromasa Yamada;S. Kato;T. Shimizu;M. Fujiwara;Y. Fujiwara;Jaeho Kim;Sanae Ikehara;Nobuyuki Shimizu-Nobuyu
观察到大气压等离子体射流产生的等离子体耀斑中的条纹现象。在这项研究中，我们通过光学发射光谱法测量了氖等离子体耀斑中的条纹结构。结果表明，等离子体耀斑的发射与等离子体电流同步。我们讨论使用 Ne I 在 692.9 和 724.5 nm 的两条发射线（其上能级分别为 Ne [3p (2p6)] 和 Ne [3p (2p10)] 的玻尔兹曼图估计的温度。该温度具有空间间隔约为0.5mm的峰值，并且峰值位置对应于发射强度的空间变化。我们还讨论了条纹现象与估计温度的机制，以及激发原子和中性原子之间的碰撞弛豫。
Striation phenomena in a plasma flare produced by an atmospheric pressure plasma jet had been observed. In this study, we measured the striation structure in a neon plasma flare by optical emission spectroscopy. As a result, it shows that the emission from the plasma flare is synchronized with the plasma current. We discuss the temperature estimated from the Boltzmann plot using the two emission lines of Ne I at 692.9 and 724.5 nm whose upper levels are Ne [3p (2p6)] and Ne [3p (2p10)], respectively. This temperature has peaks with a spatial interval of about 0.5 mm, and the peak positions correspond to the spatial variation of the emission intensity. We also discuss the mechanism of the striation phenomena with the estimated temperature, and collisional relaxation between excited and neutral atoms.