Parametric instabilities of circularly polarized Alfvén waves in plasmas with beam protons

Y Nariyuki, T Hada, K Tsubouchi - Journal of Geophysical …, 2009 - Wiley Online Library
The proton velocity distribution functions (VDFs) observed in the solar wind often show
beam components. In this study, by means of one‐dimensional hybrid simulation, parametric …

Effect of nonlinear circularly polarized waves on linear instabilities triggered by an alpha particle beam

L Gomberoff - Journal of Geophysical Research: Space …, 2006 - Wiley Online Library
It is shown that nonlinear left‐hand polarized waves can either stabilize or destabilize linear
right‐hand polarized instabilities triggered by an alpha particle beam in a magnetized …

Ion acoustic‐like waves triggered by nonlinear circularly polarized waves in the presence of an alpha particle beam

L Gomberoff - Journal of Geophysical Research: Space …, 2006 - Wiley Online Library
We consider a fast solar wind‐type plasma consisting of electrons, a protons background,
and a much more tenuous alpha particle beam. It is shown that such system is unstable …

Ion‐acoustic waves triggered by left‐hand polarized finite‐amplitude waves propagating in the beam direction

L Gomberoff - Journal of Geophysical Research: Space …, 2006 - Wiley Online Library
Nonlinear ion‐acoustic like waves triggered by large‐amplitude circularly polarized waves
propagating in the direction of a proton beam are studied. The properties are strongly …

Nonlinear ion‐acoustic waves supported by an ion beam

L Gomberoff - Journal of Geophysical Research: Space …, 2007 - Wiley Online Library
It is shown that in a plasma composed by electrons, a proton core, and a proton beam
propagating along an external magnetic field, finite amplitude left‐hand polarized waves …

Parametric decays, stabilization effects, and electrostatic instabilities due to finite‐amplitude Alfvén waves in a fast solar wind‐like plasma

L Gomberoff - Journal of Geophysical Research: Space …, 2007 - Wiley Online Library
The effects of a finite‐amplitude Alfvén wave in a plasma system with a proton and an alpha‐
particle beam, are studied. The system is described by a fourteenth‐order polynomial …

Linear and nonlinear electromagnetic and electrostatic instabilities in a plasma with two ion beams

L Gomberoff - Journal of Geophysical Research: Space …, 2008 - Wiley Online Library
Linear and nonlinear properties of a plasma system with a proton and an alpha‐particle
beam, are studied. It is shown that the presence of a second beam can change the linear …

Electrostatic instabilities triggered by finite amplitude Alfvén/ion‐cyclotron waves and relative drifts among the ion components in the magnetosphere

L Gomberoff - Journal of Geophysical Research: Space …, 2008 - Wiley Online Library
Alfvén/ion‐cyclotron waves have been observed in several regions of the magnetosphere.
Parametric decays of finite amplitude Alfvén/ion‐cyclotron waves in the presence of He+ …

Stabilization of the magnetosonic instability and destabilization of nonlinear electrostatic waves due to finite amplitude Alfven waves in a two ion-beam plasma

L Gomberoff - Physics of Plasmas, 2008 - pubs.aip.org
It has been shown that a large amplitude Alfvén wave can stabilize linear magnetosonic
instabilities triggered by an ion beam. This phenomenon occurs for large amplitude waves …

Nonlinear electrostatic instabilities in the solar wind

L Gomberoff - Journal of Geophysical Research: Space …, 2009 - Wiley Online Library
It is well known that nonlinear electrostatic instabilities can be triggered in a plasma with
streaming ion species in the presence of finite‐amplitude Alfvén cyclotron waves. The …