Wiktionary
n. (context physics English) The emission of electrons from a material when exposed to X-rays.
Wikipedia
X-ray fluorescence (XRF) is the emission of characteristic "secondary" (or fluorescent) X-rays from a material that has been excited by bombarding with high-energy X-rays or gamma rays. The phenomenon is widely used for elemental analysis and chemical analysis, particularly in the investigation of metals, glass, ceramics and building materials, and for research in geochemistry, forensic science, archaeology and art objects such as paintings and murals.
Usage examples of "x-ray fluorescence".
Microscopy, infrared spectrophotometry, pyrolysis-gas chromatography, mass spectrometry, x-ray fluorescence, and neutron activation analysis were not required to figure out that much.
I can show you the results from the earlier optical emission and X-ray fluorescence tests which—.
I can show you the results from the earlier optical emission and X-ray fluorescence tests which&mdash.
The X-ray fluorescence device had sent back to Earth a preliminary assay of the composition of Martian regolith.
By using X-ray fluorescence I was able to detect trace amounts of metals in four of the nylon fibers.