Abstract: A kinetic model for a series of large-bore copper-vapor lasers is completed. It includes the electric differential circuit equations and the nonlinear partial kinetic equations, and the equations are resolved by the method of Runge-Kutta and implicit difference respectively. On the basis of consistent computational results the radius kinetic parameters are presented, they are stimulating electric field, the plasma electron temperature and output power under different charging voltage are presented. The space- time behavior of the laser intensity is also shown in this paper, then we can conclude that the buffer gas pressure takes an important role in the large bore copper vapor laser. There is very agreement that exists between the calculated and measured results for the diameter of 6.5-cm copper vapor laser. So we predict some results of the copper vapor laser of diameter of 8.0 cm. !4
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