Dispersion Relations for Thermally Excited Waves in Plasma Crystals

Details Dispersion Relations for Thermally Excited Waves in Plasma Crystals Dispersion Relations for Thermally Excited Waves in Plasma Crystals

2003-08-18

arxiv.org/abs/physics/0308072v1

Journal of Physics A: Mathematical and General, Volume 36, Issue 22, pp. 6109-6115 (2003).

Physics

Plasma Physics

8 pages, Presented at COSPAR '03

Scientific paper

10.1088/0305-4470/36/22/337

Thermally excited waves in a Plasma crystal were numerically simulated using a Box_Tree code. The code is a Barnes_Hut tree code proven effective in modeling systems composed of large numbers of particles. Interaction between individual particles was assumed to conform to a Yukawa potential. Particle charge, mass, density, Debye length and output data intervals are all adjustable parameters in the code. Employing a Fourier transform on the output data, dispersion relations for both longitudinal and transverse wave modes were determined. These were compared with the dispersion relations obtained from experiment as well as a theory based on a harmonic approximation to the potential. They were found to agree over a range of 0.9

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