摘要
采用流体模型对等离子体电极普克尔盒(PEPC)电光开关单脉冲过程进行了数值模拟分析.模型包括带电粒子连续性方程、动量守恒方程、电子平均能量方程及空间电位泊松方程.分别采用隐式指数差分格式,超松弛迭代法(SOR)和经典四阶龙格-库塔法(R-K)对带电粒子连续性方程,泊松方程和电子平均能量方程进行数值求解.模拟分析了PEPC单脉冲过程中的带电粒子浓度、电子温度、空间电场、PEPC的放电电流、晶体两侧电压和开关效率的时间演化特性.模型得出了PEPC中气体放电等离子体的微观物理过程与PEPC宏观参量的关系,对设计性能优良的大口径电光开关是非常有意义的.
In this paper, a fluid model of electro-optic switch of plasma-electrode Pockels cells （PEPC） driven by one-pulse process is proposed. The model includes a simplified set of fluid continuity equations, Poisson＇ s equation and the electron average energy equation, and these equations are numerically solved with the exponential difference scheme, the classical successive over relaxation method （SOR） and the classical fourth-order Runge-Kutta method, respectively. The evolving characteristics of density of charged particles, electronic temperature, electric field, discharge current, charging voltage of the KDP crystal and the switching efficiency of PEPC are simulated. The model for PEPC, which reveals the relationship between the microcosmic physical processes of gaseous discharge plasma and macrocosmic parameters of PEPC, is very useful for the design of large aperture electro-optic switches.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2006年第7期3519-3523,共5页
Acta Physica Sinica
关键词
等离子体电极普克尔盒
电光开关
数值模拟
气体放电
plasma-electrode Pockels cells （PEPC）, electro-optic switch, numerical simulation, gaseous discharge
