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>Relativistic effects on electron acceleration by elliptical q-gaussian laser beam driven electron plasma wave
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Relativistic effects on electron acceleration by elliptical q-gaussian laser beam driven electron plasma wave
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机译：Relativistic effects on electron acceleration by elliptical q-gaussian laser beam driven electron plasma wave
Abstract Theoretical investigation on propagation dynamics of an elliptical q-Gaussian laser beam in a plasma by considering the relativistic mass nonlinearity of plasma electrons has been presented. The study is then extended to investigate the electron plasma wave (EPW) excitation by the laser beam. Following variational theory the nonlinear wave equations governing the evolution of laser beam and plasma wave have been reduced to a set of coupled ordinary differential equations for the beam widths of pump beam and EPW. Further the acceleration of electrons by the EPW excited by the laser beam has been investigated. The results obtained from numerical analysis reveal a stronger self-focusing of the q-Gaussian laser beam, which is desirable to excite a large amplitude electron plasma wave (EPW) for electron acceleration by extending the interaction length.
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