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Summary form only given. During the recent experiments and PIC simulations, quasi- monoenergetic for electron is observed. Forming the free of cold plasma electrons cavity behind the laser pulse is possible instead of periodic plasma wave and plasma channel guided method. In this bubble cavity a dense bunch of relativistic electrons with a monoenergetic spectrum is self-generated. The profiles and...
Ultrashort laser sources have been developed by the C.PA technique in the recent years .This progress causes to produce quasi-monoenergetic electron during the laser-plasma interaction. Such high quality electron beams are generated by different mechanisms. One of the new and effective methods is to prepare the cavity or bubble regime when an ultrashort laser pulse propagates in underdense plasma...
This paper reports that self-focusing is an effective phenomenon in cavity regime. This effect tends to increase by laser interaction with nonlinear plasma especially when the laser power is more than critical rate. PIC simulation results that affected by self-focusing during elliptical cavity regime are presented. The theoretical results show efficient energy and gain for electrons trapped into the...
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