Fast photography and optical emission spectroscopy are implemented in a 5 mm neon gap dielectric barrier discharge (DBD) at atmospheric pressure with quartz glass used as the dielectric layer. Results show that it starts with a Townsend discharge and ends at a sub-normal glow discharge in neon DBD. Based on the Townsend discharge, the first ionization coefficient of neon is measured. The measurements are consistent with those at low pressure. Optical emission spectroscopy indicates that the spectra are mainly composed of atomic lines of neon, molecular bands and molecular ion bands originating from inevitable gas impurities (mainly nitrogen). Moreover, spectral lines emitted from atomic neon corresponding to the transitions (2p 5 3p → 2p 5 3s) are predominant. Although the second positive system of N 2 (C 3 Π u → B 3 Π g ) is observed, their intensities are too weak compared with neon’s spectrum. The molecular nit...

中文翻译：

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通过介质阻挡层放电测量大气压氖的第一汤森德电离系数

使用石英玻璃作为介电层，在大气压力下，在5 mm的氖间隙介电势垒放电（DBD）中实现快速摄影和光谱发射。结果表明，它始于Townsend放电，结束于霓虹灯DBD中的次正常辉光放电。根据汤森放电，测量氖气的第一电离系数。测量结果与低压下的测量结果一致。发射光谱表明，光谱主要由氖原子线，分子带和分子离子带组成，这些原子带来自不可避免的气体杂质（主要是氮）。而且，从原子氖发出的与跃迁（2p 5 3p→2p 5 3s）相对应的谱线占主导地位。尽管观察到N 2的第二个正系统（C 3Πu→B 3Πg），与霓虹光谱相比，它们的强度太弱。分子结构