These facilities enable dense flashes of gamma rays through colliding laser pulses, simulating astrophysical conditions. Recent advances in micrometer-scale structured plasma targets have further ...

For that, you need something like this gamma-ray spectroscope. Dubbed the Pomelo by [mihai.cuciuc], the detector is a homebrew solid-state scintillation counter made from a thallium-doped cesium ...

More information: L. T. Glöggler et al, Positronium Laser Cooling via the 13S−23P Transition with a Broadband Laser Pulse, Physical Review Letters (2024). DOI: 10.1103/PhysRevLett.132.083402 ...

A high-tech sensor designed and built at the Lawrence Livermore National Laboratory (LLNL) has now traveled farther than 250 ...