Quasineutral particle simulation model with application to ion wave propagation

Technical Report · Sat Jan 01 04:00:00 EST 1977

DOI:https://doi.org/10.2172/7225735· OSTI ID:7225735

Okuda, H.; Dawson, J. M.; Lin, A. T.; Lin, C. C.

A new class of particle simulation models has been developed which eliminates the high-frequency space charge oscillations while keeping the low-frequency ion-density fluctuations unmodified. Physically, the quasineutrality is maintained as the adiabatic electrons follow the ion-density fluctuations so as to Debye shield the resultant electrostatic potential. It is, therefore, possible to use the integration time step comparable to the characteristic time scale of the low-frequency oscillations so that realistic plasma parameters can be used in the present simulation model. Applications to the ion sound wave propagation, ion-ion two-stream instability, and the low-frequency fluctuation spectrum in a magnetic field are given. How to include the nonadiabatic electrons in the model is also discussed.

• Research Organization: Princeton Univ., NJ (USA). Plasma Physics Lab.
• OSTI ID: 7225735
• Report Number(s): PPPL-1317
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700105* -- Fusion Energy-- Plasma Research-- Plasma Kinetics-Theoretical-- (-1987)
700108 -- Fusion Energy-- Plasma Research-- Wave Phenomena
DEBYE LENGTH
ION DENSITY
ION WAVES
MATHEMATICAL MODELS
PLASMA SIMULATION
PLASMA WAVES
SPACE CHARGE
WAVE PROPAGATION