Military chiefs are to rush devastating laser guns into service to meet the threat posed by Russian drones and missiles. Royal Artillery troops will test the revolutionary ‘DragonFire ...

Many biologically important molecules change shape when stimulated by UV radiation. Although this property can also be found ...

The hard X-ray FEL has come of age. A free-electron laser is not like other lasers. It works by forcing a beam of electrons, travelling at nearly the speed of light, to oscillate in a long ...

The researchers used the world’s largest and most powerful X-ray laser: the European X-Ray Free-Electron Laser (European XFEL) located in Schenefeld near Hamburg, Germany. This facility features ...

Before this, I worked as a maintenance engineer, fixing machinery all day long. I always thought lasers were fascinating, and ...

What are X-Ray Free-Electron Lasers? X-ray free-electron lasers (XFELs) are a revolutionary type of X-ray source that produce ultra-short, highly intense pulses of X-rays. Unlike conventional X-ray ...

More information: Jack W. D. Halliday et al, Bounds on Heavy Axions with an X-Ray Free Electron Laser, Physical Review Letters (2025). DOI: 10.1103/PhysRevLett.134.055001 Journal information ...