【作者】 殷燕；

【导师】 董丽芳；

【作者基本信息】 河北大学 ， 光学， 2003， 硕士

【摘要】 本工作采用蒙特卡罗（Monte-Carlo）计算机模拟的方法，模拟了大气常温下O₂、N₂及O₂／N₂直流放电过程。考虑了各种弹性和非弹性碰撞过程，在纯氧气、纯氮气中，给出了不同简化场E／N条件下的电子漂移速度和平均电子能量的变化；着重分析了激发、电离、分解及分解电离碰撞的粒子数随E／N、电子能量的变化，同时计算了激发发射光谱的波长。对于O₂／N₂混合气体，模拟了不同配比条件下直流放电过程，得出了发生碰撞的粒子数随E／N、电子能量的变化；着重分析了空气中激发、电离、分解及分解电离碰撞的粒子数随E／N的变化，给出了电子漂移速度和平均电子能量随E／N的变化。通过模拟在大气常温下O₂、N₂及O₂／N₂的直流放电过程，所得结果对进一步了解大气常温下直流放电动力学的机理具有重要意义，对大气常温下介质阻挡放电研究也具有一定的参考价值。更多还原

【Abstract】 In this paper, the processes of DC discharges in O2, N2 and O2/N2 mixtures at atmospheric pressure have been simulated by the Monte Carlo computer simulation method. Elastic collision and inelastic collision are considered in oxygen molecule, nitrogen molecule by electron impart. The mail simulation results were as follow: (1)The variations of drift velocity and the average energy of electron with the E/N in O2 and N2 are obtained. The number of electrons for excitation, ionization, dissociation and dissociative ionization collision with the E/N and the energy of electron are analyzed emphatically. (2) The process of DC discharge in O2/N2 mixtures with the different N2 concentration has been simulated. The dependences of number of collisions with the E/N and the energy of electron are given. It is analyzed stressfully that the process of electron-molecule collision with the E/N and the energy of electron in air at atmospheric pressure. And the drift velocity and the average energy of electron in air are computed. The results obtained in this work will be of great importance to the research of discharges in atmosphere including dielectric barrier discharge at atmospheric pressure.更多还原