Accomplishment of Numerical Simulation for a SSD Beam Propagation in a Large Scale Plasma
【Abstract】Beam smoothing by spectral dispersion (SSD) technology is widely adopted in larger laser fusion facilities. Using intensity distribution of SSD beam at its focal plane as boundary condition of laser plasma simulation code LAP3D, we simulate the propagation of SSD beam in large scale hohlraum underdense plasma. High efficiency parallel calculation of intensity distribution of a SSD beam at its focal plane is accomplished with improved algorithm, and then the simulation of entire beam propagation can be processed. The effect of modulation frequency of SSD beam on beam propagation is analyzed.
【Keywords】 physical optics; beam smoothing; spectral dispersion smoothing; numerical simulation; laser plasma;
(Translated by CAI ZJ)
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