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damping of waves

Marsch talk on Landau damping and ion beams - UNH Experimental ...

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Proton beam drift versus beta<br />

The dotted and the<br />

dashed lines show<br />

the threshold <strong>of</strong> the<br />

Alfven I instability<br />

(Daughton and Gary,<br />

1998) with a constant<br />

ratio <strong>of</strong> the proton<br />

beam density to the<br />

electron density, for<br />

the values 0.05 (top)<br />

and 0.2 (bottom line).<br />

Tu, Marsch and Qin J.G.R,109, 2004

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