A Vlasov-Fokker-Planck code for high energy density physics

作者：Tzoufras M^*; Bell A R; Norreys P A; Tsung F S

来源：Journal of Computational Physics, 2011, 230(17): 6475-6494.

DOI：10.1016/j.jcp.2011.04.034

• Numerical methods
• High energy density physics
• Vlasov
• Fokker-Planck
• Laser fusion
• Electron transport
• Spherical harmonics

OSHUN is a parallel relativistic 2D3P Vlasov-Fokker-Planck code, developed primarily to study electron transport and instabilities pertaining to laser-produced including laser-fusion-plasmas. It incorporates a spherical harmonic expansion of the electron distribution function, where the number of terms is an input parameter that determines the angular resolution in momentum-space. The algorithm employs the full 3D electromagnetic fields and a rigorous linearized Fokker-Planck collision operator. The numerical scheme conserves energy and number density. This enables simulations for plasmas with temperatures from MeV down to a few eV and densities from less than critical to more than solid. Kinetic phenomena as well as electron transport physics can be recovered accurately and efficiently.

• 出版日期2011-7-20