XRF may refer to:
*
X-ray fluorescence
X-ray fluorescence (XRF) is the emission of characteristic "secondary" (or fluorescent) X-rays from a material that has been excited by being bombarded with high-energy X-rays or gamma rays. The phenomenon is widely used for elemental analysis ...
, analytical technique
*
X-ray flash (astronomy)
In astronomy, an X-ray flash is a transient emission of X-rays originating in a distant galaxy, probably caused by a hypernova. They have been observed to last 90 to 200 seconds.
Nearly all hypernovae are detected via (higher-energy) gamma ray ...
, celestial object
{{disambiguation