Simulation and theory for two-dimensional beam-plasma instability
作者： Sumin Yi , Tongnyeol Rhee , Chang-Mo Ryu , Peter H. Yoon
DOI: 10.1063/1.3529359
关键词: Classical mechanics 、 Fermion 、 Physics 、 Distribution function 、 Elementary particle 、 Scale (descriptive set theory) 、 Nonlinear system 、 Statistical physics 、 Electron 、 Diffusion (business) 、 Instability
摘要: A comparative study of the dynamics electron beam-plasma system in two spatial dimensions is carried out by means particle-in-cell (PIC) simulation and quasilinear theory. In literature, instability usually studied with one-dimensional assumption. Among few works that include higher-dimensional effects are two- three-dimensional theory two-dimensional PIC simulations. However, no efforts were made to compare side side. The present paper carries a detailed It found quite adequately accounts for most important features associated result. For instance, particle diffusion time scale, maximum wave intensity, dynamical development distribution function, change spectrum all agree quantitatively. certain nonlinear such as Langmuir condensation phenomenon not reproduced Nevertheless, verifies simple effective choice parameters.
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