A nonlinear dispersion relation for beam plasma oscillations is obtained by expanding the usual dispersion relation about both the most unstable root and the perturbed beam electron orbits. This procedure leads to a nonlinear rate equation similar to the van der Pol equation.
No takes yet. Share an insight, caveat, or question.
Walsh et al. (1976) studied this question.
Synapse has enriched 2 closely related papers on similar clinical questions. Consider them for comparative context: