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Unformatted text preview: 2 t ω ωkvΩ , (2) where Ω = eB /m e c is the electron cyclotron frequency and k is the wavevector in the z direction. The calculation is simpliﬁed if you assume that the wave is righthand circularly polarized so that the perturbed electric ﬁeld can be written as ˆ E = ˆ E ˆ x + i ˆ E ˆy . (3) From this polarization it follows that the perturbed distribution is proportional to e iθ , where θ is the polar angle of the velocity vector perpendicular to the magnetic ﬁeld. Also assume that ω pe ± Ω, which allows you to discard the displacement current in Ampere’s law....
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This note was uploaded on 12/29/2011 for the course PHYSICS 762 taught by Professor Drake during the Fall '08 term at Maryland.
 Fall '08
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