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Figures of the Article
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Structure of the ponderomotive potential Φpond (in a. u.) of one LG laser pulse (a) and two beating LG laser pulses (b) in transverse plane (y -z ). The ponderomotive forceFpond=−∇Φpond has an azimuthal component only for two beating waves. -
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3D PIC simulation results of electric field and fluid velocity distribution at transverse plane (y -z plane) at the centre of simulation box (x = 15 μm) and the time 320 fs after the laser has passed by. (a), (b), and (c) show transverse slices ofEx ,Eθ , andEr . -
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PIC results of transverse profile of (a) electron density perturbation δne , (c) axial magnetic fieldBx and (e) azimuthal magnetic fieldBθ at the centre of simulation box (x = 15 μm) and the time 320 fs after the laser has passed by. The dashed lines shown in the transverse slices are the line outs used to plot the graphics on the right. The plots on the right, (b), (d), and (f), are line outs from the slices plotted against the position along the line outsd plotted in (a), (c), and (e).d is the coordinate along the dashed lines. Solid lines in (b), (d) and (f) are theory predictions, for the same situation considered in Table 1. -
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PIC results of transverse profile of (a) electron density perturbation δne , (b) axial magnetic fieldBx and (c) azimuthal magnetic fieldBθ at the centre of simulation box (x = 15 μm) and the time 320 fs after the laser has passed by.
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