“School of Physics”
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| Paper IPM / P / 8404 |
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For two different pulse shapes, Gaussian and piecewise, the electron acceleration by a circularly polarized laser pulse is considered. First, with a piecewise shape similar to Gaussian, it is shown that the acceleration results for different pulse shapes coincide well, especially for strong self-generated magnetic field in the acceleration direction. Then the effect of extending the rising part or falling part of piecewise pulse shape on electron acceleration is examined. For falling part, no new result is obtained but spreading the rising part reduces the electron energy gain.
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