X-ray stopwatch can measure durations of just attoseconds

T1Covered by 1 source · first reported by Nature / Science / Nature Biotechnology at 04 Nov, 00:00 UTC

Nature, Published online: 04 November 2026; doi:10.1038/d41586-026-03423-2 The duration of short ångström-wavelength X-ray pulses, which lasted merely 170 attoseconds, has finally been measured accurately. The optical system designed for precision pulse duration metrology can be used as a…