Upcoming and planned experiments combining increasingly intense lasers and energetic
particle beams will access new regimes of nonlinear, relativistic, quantum effects. This …

We discovered a simple regime where a near-critical plasma irradiated by a laser of
experimentally available intensity can self-organize to produce positrons and accelerate …

Relativistic positron beams are required for fundamental research in nonlinear strong field
QED, plasma physics, and laboratory astrophysics. Positrons are difficult to create and …

High-power laser facilities give experimental access to fundamental strong-field quantum
electrodynamics processes. A key effect to be explored is the nonlinear Breit-Wheeler …

When a photon collides with a laser pulse, an electron-positron pair can be produced via the
nonlinear Breit–Wheeler process. A simulation framework has been developed to calculate …

Ongoing progress in laser and accelerator technology opens new possibilities in high-field
science, notably to investigate the largely unexplored strong-field quantum electrodynamics …

Experimental efforts toward the detection of the nonperturbative strong-field regime of the
Breit-Wheeler pair creation process plan to combine incoherent sources of GeV γ quanta …

The effect of the pulse envelope on electron-positron pair creation in a circularly polarized
laser pulse is investigated. Interference on the length scale of the pulse envelope, and …

With the rapid development of high-power petawatt class lasers worldwide, exploring
physics in the strong field QED regime will become one of the frontiers for laser–plasma …

Electromagnetic showers develo** from the collision of an ultraintense laser pulse with a
beam of high-energy electrons or photons are investigated under conditions relevant to …