Nonlinear Radiation Pressure and Stochasticity in Ultraintense Laser Fields
Joel E. Moore
Abstract
The radiation force on a single electron in an ultraintense plane wave (a = eE/mcω 1) is calculated and shown to be proportional to a4 in the high-a limit for arbitrary waveform and polarization. The cyclotron motion of an electron in a constant magnetic field and an ultraintense plane wave is numerically found to be quasiperiodic even in the high-a limit if the magnetic field is not too strong, as suggested by previous analytical work. A strong magnetic field causes highly chaotic electron motion and the boundary of the highly chaotic region of parameter space is determined numerically. Applications to experiments and astrophysics are briefly discussed.
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