Virginia TechScales, Wayne A.Ganguli, GurudasRudakov, LeonidMithaiwala, Manish2014-01-232014-01-232012-06-01Scales, W. A.; Ganguli, G.; Rudakov, L.; et al., "Model for nonlinear evolution of localized ion ring beam in magnetoplasma," Phys. Plasmas 19, 062902 (2012); http://dx.doi.org/10.1063/1.47293301070-664Xhttp://hdl.handle.net/10919/25125An electrostatic hybrid model, which investigates the nonlinear evolution of a localized ion ring beam in a magnetoplasma, is described and applied to the generation and evolution of turbulence in the very low frequency (VLF) (Omega(ci) < omega < Omega(ce)) range, where Omega(ci(e)) is the ion (electron) gyro frequency. Electrons are treated as a fluid and the ions with the particle-in-cell method. Although the model is electrostatic, it includes the effects of energy loss by convection of electromagnetic VLF waves out of the instability region by utilizing a phenomenological model for effective collisions with the fluid electrons. In comparison with a more conventional electrostatic hybrid model, the new model shows much more efficient extraction of energy from the ion ring beam and reduced background plasma heating over a range of parameters. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4729330]application/pdfenIn CopyrightHybridAccelerationRadiationElectronsEmissionsWavesArticle - Refereedhttp://scitation.aip.org/content/aip/journal/pop/19/6/10.1063/1.4729330https://doi.org/10.1063/1.4729330