High power -ray flash emission in the ultra intense laser-plasma interaction

Esirkepov, T. Z.

When the high-intensity laser interaction with matter enters the regime of dominated radiation reaction, the radiation losses open the way for producing short pulse high power ray flashes. The -ray pulse duration and divergence are determined by the laser pulse amplitude and by the plasma target density scale length. On the basis of theoretical analysis and particle-in-cell simulations with the radiation friction force incorporated, optimal conditions for generating the -ray flash in the laser interaction with a tailored overcritical density target are found.