Analysis of Atomic Electronic Excitation in Nonequilibrium Air Plasmas  

作　　者：何新 党伟华 贾红辉 尹红伟 张海良 常胜利 杨俊才 

机构地区：[1]Department of Physics, College of Science, National University of Defense Technology, Changsha 410073 [2]Changsha Commerce and Tourism College, Changsha 410073

出　　处：《Chinese Physics Letters》2014年第9期111-114,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No 61007047, the Advanced Research Program of National University of Defense Technology under Grant No JC13-02-15, and the Project of Development Program for National Defense Technology under Grant No 2011BAK03B07-3.

摘　　要：Electronic excitation of atoms is studied in nonequilibrium air plasmas with the electronic temperature be- tween 8000 K and 2000OK. By using the modified Saha-Boltzmann equation, our simplified method takes into account significant radiative processes and strong self-absorption of the vacuum ultraviolet lines. Calculations are carried out at three trajectory points of the Fire 1I flight experiment. Good agreement with the detailed collisional-radiative model is obtained, and the performance of this method in applications to highly nonequi- librium conditions is better than Park＇s quasi-steady-state model and Spradian-9.0. A short discussion on the influence of optical thickness of the vacuum ultraviolet radiation is also given. It costs about 2.9 ms on the average to solve one cell of the shock layer on a low cost computer, which shows that the present method is fast and efficient.Electronic excitation of atoms is studied in nonequilibrium air plasmas with the electronic temperature be- tween 8000 K and 2000OK. By using the modified Saha-Boltzmann equation, our simplified method takes into account significant radiative processes and strong self-absorption of the vacuum ultraviolet lines. Calculations are carried out at three trajectory points of the Fire 1I flight experiment. Good agreement with the detailed collisional-radiative model is obtained, and the performance of this method in applications to highly nonequi- librium conditions is better than Park＇s quasi-steady-state model and Spradian-9.0. A short discussion on the influence of optical thickness of the vacuum ultraviolet radiation is also given. It costs about 2.9 ms on the average to solve one cell of the shock layer on a low cost computer, which shows that the present method is fast and efficient.

分 类 号：O659.36[理学—分析化学] TQ221.11[理学—化学]