A particle with charge q and mass m interacts with a circularly polarized plane wave in vacuum.
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A particle with charge q and mass m interacts with a circularly polarized plane wave in vacuum. The electric field of the wave is E(z, t) = Re {( + i ŷ)E0 exp[i(kz − ωt)]}.
(a)Let v± = νx ± ivy and Ω = 2q E0/mc. Show that the equations of motion for the components of the particle’s velocity υ can be written
(b) Let ± = ν ± e ± i(kz−ωt) ± ic Ω ω and show that
(c) Let K be the constant of the motion defined by the two ʋ̇ ˙vz equations above. Differentiate the equations in part (a) and establish that
Use the initial conditions ν(0) = 0 and v'z(0) = 0 to evaluate K and solve for vz(t). Describe the nature of the particle acceleration in the z-direction.
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