In this paper, we present results of rotational, vibrational, and gas temperature distribution study in the cathode-sheath region of an abnormal glow discharge in hydrogen and hydrogen-argon mixture. For this purpose, we used Q-branch of the Fulcher-α diagonal bands d³Π⁻_u, ν′=0, 1, 2, 3→ a³Σ⁺_g, ν″=0, 1, 2, 3. The boundary between the cathode sheat and negative glow region is determined as the position where the electric field strength falls to zero. For the electric field measurement Stark polarization spectroscopy of hydrogen Balmer alpha line was employed and the thickness of cathode sheat is estimated by fitting the experimentally obtained distribution of electric field strength to a suitable model function.The temperature values, measured in the cathode sheath from different vibrational bands, decrease with vibrational quantum number v′ increase. The vibrational temperature is determined from the relative intensities of vibrational bands of the Fulcher-α system (d³Π⁻_u→ a³Σ⁺_g electronic transition; Q-branch v′= v″=2 and v′= v″=3₎. Temperature distributions along the axis of the cathode sheath are also reported and discussed. The distributions of rotational temperature show that all three temperatures (gas, rotational and vibrational) vary along the cathode sheath region of discharge and that all four bands give consistent values for the rotational temperature. The measurements performed with high spectral resolution provide further insight into understanding or modelling the DC glow discharge. The reported results represent the contribution to the development of the spectroscopic method for gas temperature measurement.

在本文中，我们介绍了在氢气和氢气-氩气混合物中异常辉光放电的阴极-鞘区中旋转，振动和气体温度分布的研究结果。为了这个目的，我们使用了富尔彻-α对角带的Q分支ð ³ Π ^- _ü，ν '= 0，1，2，3→一个³ Σ ⁺_克，ν″ ＝ 0、1、2、3。将阴极壳与负辉光区之间的边界确定为电场强度降至零的位置。为了进行电场测量，使用了Balmer alpha氢谱线的Stark极化光谱学，并且通过将实验获得的电场强度分布拟合到合适的模型函数来估算阴极壳的厚度。振动带，随振动量子数v'的增加而减小。振动温度从富尔彻-α系统的振动谱带的相对强度来确定（d ³ Π ^- _ü →一个³ Σ⁺ _g电子转换；Q分支v '=  v “= 2且v '=  v ”= 3 _）。还报道和讨论了沿阴极鞘轴的温度分布。旋转温度的分布表明，所有三个温度（气体，旋转和振动温度）都沿着放电的阴极鞘区变化，并且所有四个带给出旋转温度的一致值。以高光谱分辨率执行的测量为了解或建模直流辉光放电提供了进一步的见解。报告的结果代表了对气体温度测量光谱方法的发展的贡献。