Recent advances in micrometer-scale structured plasma targets have further opened doors to achieving photon collisions that produce electron-positron pairs. A breakthrough concept, proposed by a ...

A process of particular interest is what happens when two electrons are transferred to a projectile in a collision and a single photon (a quantum of light) is liberated. The inverse of this process ...

A snapshot of a computer simulation showing how energy density changes over time in the collision of a lead ion with a photon emitted by another lead ion. Disclaimer: AAAS and EurekAlert!

It will also track the moving cutting head and stop it if a collision is imminent, thereby avoiding damage to the head. The new Photon fiber laser cutting machines have been designed by Esprit with ...