Collisional {delta}f method

Technical Report · Wed Dec 31 04:00:00 EST 1997

DOI:https://doi.org/10.2172/304188· OSTI ID:304188

Chen, Y; White, R B

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 Coulomb 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 {alpha} particles. The saturation amplitude is found to scale with the collision rate in a way as predicted by theory.

• Research Organization: Princeton Univ., Princeton Plasma Physics Lab., NJ (United States)
• Sponsoring Organization: USDOE Office of Energy Research, Washington, DC (United States)
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 304188
• Report Number(s): PPPL--3257; ON: DE98050124
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ALFVEN WAVES
ALPHA PARTICLES
CALCULATION METHODS
COLLISIONAL PLASMA
INSTABILITY GROWTH RATES
NONLINEAR PROBLEMS
PLASMA INSTABILITY