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The generation of laser-driven dense relativistic electron layers from ultra- thin foils and their use for coherent Thomson backscattering is discussed, applying analytic theory and one-dimensional particle-in-cell simulation. The blow-out regime is explored in which all foil electrons are separated from ions by direct laser action. The electrons follow the light wave close to its leading front. Single...
Since 1993, the first experiment already shows there are strong terahertz (THz) radiations when an intense laser pulse is focused into gas. More recently, delicate experiments display conical forward THz emission from a femtosecond laser filament, which is explained by a transition-Cherenkov radiation (TKR) model. In fact, there is a long dispute about THz emission mechanism in a laser plasma filament...
When an intense Gaussian laser pulse (I > 1021 W/cm2) with circular polarization (CP) is incident on a planar thin foil, the foil is curved and is transformed into a "cocoon". Rayleigh-Taylor like instabilities develop much more slowly as the radiation pressure is increased, so that these instabilities can disperse nearly the whole cocoon into low density plasma cloud and only a clump...
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