A modeling of the photoplasma in a slab cell filled with a sodium vapor and argon mixture one-sided irradiated by a uniform radiation flux was carried out. This study was performed for a spatially heterogeneous distribution of the resonance level density, unlike our previous works. An analytical form of this distribution for the slab available in the literature was used. The present investigation was performed at the sodium vapor pressure PNa=0.005−0.3 torr and the ratio of argon and sodium pressures PAr/PNa=102 for the spectral flux density F=5⋅102−5.2⋅104 Wm−2nm−1. A set of plasma chemical reactions, radiation transfer and charge transport were considered. The spatial profiles of densities of the sodium atomic levels, atomic and diatomic ions, the electron density and temperature, and the electric potential in the volume of the cell were obtained from a self-consistent solution of the balance equations for densities of plasma components and the electron energy. It was established that spatial picture of the Na+ and Na2+ ion density fractions depends significantly on the cell conditions. Parameters of wall sheaths were calculated used formulas from the literature. Used these data and the obtained spatial profiles of electric potential, the dependencies of electromotive force (the potential difference between the illuminated and dark walls of the cell) on the sodium pressure and incidental spectral flux density were obtained. The maximal EMF value was 1.5 V for the PNa=0.05 torr and F=5.2⋅104 Wm−2nm−1. Obtained results can be used in the development of photo-electric converters.

中文翻译：

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用于在均匀辐射单侧照射的板状单元中产生 EMF 的光等离子体建模


对充满钠蒸气和氩气混合物的板状单元中的光等离子体进行了模拟，该板池由均匀辐射通量单侧照射。与我们以前的工作不同，这项研究是针对共振能级密度的空间异质分布进行的。使用了文献中可用的板的这种分布的分析形式。本研究是在钠蒸气压 PNa=0.005-0.3 torr 和氩气和钠压之比 PAr/PNa=102 下进行的，光谱通量密度 F=5⋅102-5.2⋅104 Wm-2nm-1。考虑了一组等离子体化学反应、辐射转移和电荷传输。钠原子能级、原子和双原子离子的密度、电子密度和温度以及电池体积中的电势的空间分布是从等离子体成分密度和电子能量的平衡方程的自洽解中获得的。已经确定 Na+ 和 Na2+ 离子密度分数的空间图像在很大程度上取决于细胞条件。墙护套的参数是使用文献中的公式计算的。利用这些数据和获得的电势空间剖面，获得了电动势（电池的照明壁和暗壁之间的电位差）对钠压力和附带光谱通量密度的依赖性。当 PNa=0.05 torr 和 F=5.2⋅104 Wm-2nm-1 时，最大电动势值为 1.5 V。所获得的结果可用于光电转换器的开发。