消融控制电弧等离子体电导率模型的初步研究

Primary Research of Conductivity Model of Ablation-controlled Arc Plasma

分析了消融控制电弧等离子体的非理想性质，提出了新的电导率模型，并用于计算电热炮放电毛细管中等离子体的电导率，模型中考虑了中性粒子碰撞和量子机理．将计算结果和其它模型作了比较．结果表明，该模型更适用于脉冲放电等离子体电导率的计算．给出了一个简化的计算公式。在2000050000K的温度范围内，简化公式和该模型的计算结果相差不到10％，

The non-ideal properties of the ablation-controlled plasma in discharge capillary was analysed, and a new plasma conductivity model was introduced for the discharge capillary of electrothermal gun. In this model, the neutral particles collision and quantum mechanism were considered. Comparing with the results calculated by others, the data shows that the conductivity model given in the paper is more reasonable for the ablation-controlled arc plasma produced in plused discharge capillary. A simple formula was given. In the temperature range of 20 000 K to 50 000 K, the error between the simple formula and result of this model is less than 10%.