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Report No.

High power $$gamma$$-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 $$gamma$$ ray flashes. The $$gamma$$-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 $$gamma$$-ray flash in the laser interaction with a tailored overcritical density target are found.



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