Damping of the trapped-particle diocotron mode.
نویسندگان
چکیده
The damping mechanism of a recently discovered trapped-particle mode is identified as collisional velocity scattering of marginally trapped particles. The mode exists on non-neutral plasma columns that are partially divided by an electrostatic potential. This damping mechanism is similar to that responsible for damping of the dissipative trapped-ion mode. The damping rate is calculated using a Fokker-Planck analysis and agrees with measurement to within 50%. Also, an experimental signature confirms a causal relation between scattering of marginally trapped particles and damping.
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ورودعنوان ژورنال:
- Physical review letters
دوره 90 24 شماره
صفحات -
تاریخ انتشار 2003