Collisional Delta-f Scheme with Evolving Background for Transport Time Scale Simulations

Technical Report · Thu Jul 01 04:00:00 EDT 1999

DOI:https://doi.org/10.2172/8844· OSTI ID:8844

Valeo, E ^[1]; Krommes, J; Brunner, S

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1. Princeton Plasma Physics Laboratory

The delta-f approach is extended for simulating the transport time-scale evolution of near-Maxwellian distributions in collisional plasmas. This involves simultaneously advancing weighted marker particles for representing the intrinsically kinetic component delta-f, and fluid equations for the parameters of the shifted Maxwellian background f(subSM). The issue of increasing numerical noise in a collisional delta-f algorithm, due to marker particle weight spreading, is addressed in detail, and a solution to this problem is proposed. To obtain higher resolution in critical regions of phase space, a practical procedure for implementing sources and sinks of marker particles is developed. As a proof of principal, this set of methods are applied for computing electrical Spitzer conductivity as well as collisional absorption in a homogeneous plasma.

• Research Organization: Princeton Plasma Physics Lab., NJ (US)
• Sponsoring Organization: USDOE Office of Energy Research (ER) (US)
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 8844
• Report Number(s): PPPL-3350; DE-AC02-CHO03073; DE-AC02-CHO03073
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ABSORPTION
CHARGED-PARTICLE TRANSPORT THEORY
COLLISIONAL PLASMA
ELECTRIC CONDUCTIVITY
HOMOGENEOUS PLASMA
KINETICS
PHASE SPACE
RESOLUTION