Enhanced creation of high energy particles in colliding laser beams

Understand

The creation of particles by two colliding strong laser beams is considered.

• It is found that the electron-positron pairs created in the laser field via the Schwinger mechanism may recollide after one or several oscillations in the field.
• Their collision can take place at high energy, which the pair gains from the field.
• As a result, high energy gamma quanta can be created by inelastic scattering or annihilation of the pair.