Physics
Scientific paper
Mar 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002phpl....9.1000r&link_type=abstract
Physics of Plasmas, Volume 9, Issue 3, pp. 1000-1009 (2002).
Physics
9
Waves, Oscillations, And Instabilities In Plasmas And Intense Beams, Microinstabilities, Particle Beam Interactions In Plasmas
Scientific paper
A spatially independent beam stability model [W. K. Rose et al., Astrophys. J. 280, 550 (1984)] is compared with one-dimensional particle-in-cell (PIC) simulations. The model uses rate equations to evaluate the coupling of longitudinal waves created by beam-plasma instabilities. Equilibrium solutions of the stability model are examined and wave energies from the model are compared with PIC simulations. The PIC simulations enable the stability model to be benchmarked and to explore the temporal evolution of the background plasma electron energy distribution, a capability not presently treated in the stability model. The generation of hot plasma electron tails is examined in the PIC simulations. The scalable, spatially independent model can be used in laboratory and astrophysical parameter regimes while numerical constraints limit the parameter regimes treatable in the PIC simulations.
Beall J. H.
Guillory J. U.
Rose Vincent D.
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