Benchmark of a parallel fluid code for parametric decay instability in inhomogeneous plasmas

摘要

A nonlinear and parallel fluid code is developed to solve the full space-time domain coupled two-fluid plasma and Maxwell equations and is used to investigate the parametric decay instabilities (PDIs) of the inhomogeneous plasma. Under the laser plasma parameters of nuclear fusion, the threshold power of TPD instability measured in the simulation agree well with the analytical results. For the X mode wave heating of electron cyclotron frequency in Tokamaks, the channels of upper-hybrid wave decay and Raman Scattering of electron cyclotron wave are also found.