解析式直流辉光放电等离子体理论模型的改进

对作者前期建立的自洽、解析式直流辉光放电等离子体理论模型进行了改进。考虑到电子能量分布，认为电子碰撞电离速率系数ｆ取决于电子的迁移速度ＶＥ和扩散速度ＶＤ，而不象以前假设电离速率系数ｆ为一常数。另外，不再将形式为（Ｃ１ｃｏｓｍｚ＋Ｃ２ｓｉｎｍｚ）的通解简化为形式为Ｃ（ｃｏｓｍｚ＋ｓｉｎｍｚ）的特解，改进后的理论模型仍为自洽的解析式理论模型，它的适用范围更广，与实验结果更为接近。

Analytic model modification for DC glow discharge plasma

In this presentation,the modification of the analytic model developed previously has been carried out with the consideration of electron energy distribution,i. e. the ionization coefficient f of electron collision with neutral moleculars is contributed from both of electron drift velocity and diffusion velocity while it was assumed to be a constant in the previous model. Another improvement is that the general solution like (C1 cosmz+C2sinmz) has been also taken in the present model while the particular solution like C(cosmz+sinmz)was employed in previous one. The modified model is also in self--consistent and analytic forms and the agreements between the theory and the experimental results are much better than before.