Collisional δf method

A general method for including various collisional effects, such as the drag and diffusion of test particles due to background plasmas, the effect of particle source and sink, and the like-particle Coloumb collisions, is presented. The marker density g is generally unknown along the particle trajectory, and its evaluation depends on the way particles are initially loaded and new particles are injected into the simulation. The method is demonstrated for the problem of the nonlinear evolution of the toroidicity induced Alfven eigenmode, driven by energetic α particles. The saturation amplitude is found to scale with the collision rate in a way as predicted by theory.

[1]  Zhihong Lin,et al.  Neoclassical transport in enhanced confinement toroidal plasmas , 1996 .

[2]  M. Rosenbluth,et al.  Nonlinear evolution of the alpha‐particle‐driven toroidicity‐induced Alfvén eigenmode , 1995 .

[3]  A. Boozer,et al.  A δf Monte Carlo method to calculate plasma currents , 1995 .

[4]  G. Hu,et al.  Generalized weighting scheme for δf particle‐simulation method , 1994 .

[5]  Baba,et al.  Resonant Auger-decay process in solid SiO2 at the Si 1s edge. , 1994, Physical review. B, Condensed matter.

[6]  John M. Dawson,et al.  Binary collision model in gyrokinetic simulation plasmas , 1993 .

[7]  S. Parker,et al.  A fully nonlinear characteristic method for gyrokinetic simulation , 1993 .

[8]  Scott E. Parker,et al.  Three-dimensional hybrid gyrokinetic-magnetohydrodynamics simulation , 1992 .

[9]  Berk,et al.  Scenarios for the nonlinear evolution of alpha-particle-induced Alfvén wave instability. , 1992, Physical review letters.

[10]  Chio-Zong Cheng,et al.  Kinetic extensions of magnetohydrodynamics for axisymmetric toroidal plasmas , 1992 .

[11]  Bruce I. Cohen,et al.  Particle simulations of collisional transport in a high recycling, diverted tokamak scrape-off layer , 1990 .

[12]  Marshall N. Rosenbluth,et al.  Numerical simulation of ion temperature gradient driven modes in the presence of ion-ion collisions , 1990 .

[13]  M. S. Chance,et al.  Hamiltonian guiding center drift orbit calculation for plasmas of arbitrary cross section , 1984 .

[14]  T. Takizuka,et al.  A binary collision model for plasma simulation with a particle code , 1977 .