PPPL-3540 is available in <a href="PPPL-3540.pdf">pdf</a> or 
<a href="PPPL-3540.ps">postscript</a> formats.

<p>
<b>Low Frequency Fishbone Mode Induced by Circulating Particles in Spherical Tori</b>
</p>

<p>
<b>Authors:</b> Ya.I. Kolesnichenko, V.S. Marchenko, and R.B. White

</p>

<p>
<b>Date of PPPL Report:</b> February 2001
</p>

<p>
<b>Published in:</b> Physics of Plasmas <b>8</b> (July 2001) 3143-3145.
</p>
 
<p>
It is found that high beta in low-aspect-ratio tori tends to stabilize the fishbone instability in a plasma with energetic circulating ions. The stabilization results from enhancement of the toroidal drift motion by large Shafranov shift, which makes it difficult to reconcile the condition of considerable energy exchange between the ions and the internal kink perturbation with the condition of the resonant wave-particle interaction.




</p>