%0 Journal Article
%T Nonlinear Electrostatic Ion-Acoustic-Like Instabilities in a System with Two Streaming Ion Components Moving in a Background Plasma
%A L. Gomberoff
%J The Open Plasma Physics Journal
%D 2008
%I Bentham Open
%R 10.2174/1876534300801010014]
%X Finite amplitude Alfv¨¦n-cyclotron waves are believed to play an important role in coronal heating and nonthermal properties of velocity distribution functions. These effects are thought to be due to parametrically unstable Alfv¨¦n-cyclotron waves and electrostatic bursts of ion-acoustic like waves. It is shown here that large amplitude Alfv¨¦ncyclotron waves propagating in multi-ion plasmas with relative drift velocities between the ion-species, can lead to a new type of nonlinear electrostatic ion-acoustic like instabilities. These instabilities occur when the phase velocity of a forward propagating ion-acoustic wave supported by one ion species become equal to the phase velocity of a backward propagating ion-acoustic wave supported by another ion species. This phenomenon is only possible when relative to the background plasma there are at least two streaming ion components.
%U http://www.benthamscience.com/open/toppj/articles/V001/14TOPPJ.htm