Abstract
The present paper investigates the effect of different sense rotations of circularly polarized (CP) Gaussian laser pulse on wake-field generation and electron acceleration when there is an axial static magnetic field. The nonlinear equation, which explains the interaction of intense CP laser beam with magnetized plasma in the quasi static approximation, is derived. The numerical analysis of our results indicates that the amplitude of plasma wake for both sense of circular polarization is similar, but affected by propagation direction of exterior magnetic field. It is found that the dephasing length is increased for the left-hand polarized laser fields, while decreased for the right-hand ones, which is reinforced as the enhancement of the forward exterior magnetic field. It is shown that the right-hand polarization laser pulse with reversed exterior magnetic field could leads to much larger electron energy (about 2.4GeV) than that of other cases.
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