131 research outputs found
Beatwave Excitation of Plasma Waves Based on Relativistic Bi-Stability
A nonlinear beatwave regime of plasma wave excitation is considered. Two
beatwave drivers are considered: intensity-modulated laser pulse and
density-modulated (microbunched) electron beam. It is shown that a long
beatwave pulse can excite strong plasma waves in its wake even when the
beatwave frequency is detuned from the electron plasma frequency. The wake is
caused by the dynamic bi-stability of the nonlinear plasma wave if the beatwave
amplitude exceeds the analytically calculated threshold. In the context of a
microbunched beam driven plasma wakefield accelerator, this excitation regime
can be applied to developing a femtosecond electron injector.Comment: 5 pages, 4 figure
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