High-power γ-ray flash generation in ultraintense laser-plasma interactions

Phys Rev Lett. 2012 May 11;108(19):195001. doi: 10.1103/PhysRevLett.108.195001. Epub 2012 May 9.

Abstract

When 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 γ-ray flashes. The γ-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 a γ-ray flash with a tailored overcritical density target are found.

MeSH terms

  • Computer Simulation
  • Gamma Rays*
  • Lasers
  • Models, Theoretical*
  • Plasma Gases

Substances

  • Plasma Gases