In this work, light emissions and radicals formed by plasma of contact glow discharge electrolysis were investigated. The plasma was generated by glow discharges at the tip of a Pt anode in contact with a sulfuric acid solution. Emissions of H atoms and OH radicals were observed when the applied voltage was above 430 V. When the applied voltage increased to 450 V, emissions of O atoms were additionally detected. The emission intensities of these radicals and atoms increased with the increasing applied voltage. When the applied voltage exceeded 460 V, thermal radiation from the Pt anode was apparent in the visible and near infrared region. Electron temperature of the plasma increased with the applied voltage from 1.0 x 10(4) to 1.5 x 10(4) K by comparison of the intensities of H-alpha and H-beta lines. The mean electron density was estimated to be 7.4 x 10(17) cm(-3) by the method of Stark broadening.
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机译：在这项工作中，研究了由接触辉光放电电解等离子体形成的光发射和自由基。等离子体是通过与硫酸溶液接触的Pt阳极尖端的辉光放电产生的。当施加电压高于430 V时，观察到H原子和OH自由基的发射。当施加电压增加至450 V时，另外检测到O原子的发射。这些自由基和原子的发射强度随着施加电压的增加而增加。当施加的电压超过460 V时，来自Pt阳极的热辐射在可见光和近红外区域明显可见。通过比较H-alpha和H-beta线的强度，等离子体的电子温度随着施加的电压从1.0 x 10（4）升高到1.5 x 10（4）K而增加。通过斯塔克加宽方法，平均电子密度估计为7.4 x 10（17）cm（-3）。
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