A team of researchers has successfully demonstrated nonlinear Compton scattering (NCS) between an ultra-relativistic electron beam and an ultrahigh intensity laser pulse using the 4-Petawatt laser.

A team of engineers and scientists has shown for the first time that a hard-X-ray cavity can provide net X-ray gain, with X-ray pulses being circulated between crystal mirrors and amplified in the ...

Lasing is much more difficult at X-ray frequencies than with visible light. The conditions that enable electrons in an atom to stay at sufficiently high energy levels to produce an X-ray laser cannot ...