Nonlinear instability dynamics in a high-density, high-beta plasma
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Entrainment and periodic pulling of an ion acoustic instability have been observed in the power spectra of a low-pressure high-beta plasma. The observed nonlinear phenomena can be modeled by using the van der Pol equation with a forcing term. Experimental results of the nonlinear processes are presented. Ion density fluctuations are detected on a negatively biased Langmuir probe for magnetic fields and input powers above 30 G and 900 W at 7.2 MHz respectively, and gas pressure below 1.5 mTorr....[Show more]
|Collections||ANU Research Publications|
|Source:||Physics of Plasmas|
|01_Corr_Nonlinear_instability_dynamics_2009.pdf||466.59 kB||Adobe PDF|
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