Wiktionary
x-ray spectroscopy
n. (context analytical chemistry English) The use of an X-ray spectrometer for chemical analysis.
Wikipedia
X-ray spectroscopy
X-ray spectroscopy is a gathering name for several spectroscopic techniques for characterization of materials by using x-ray excitation.
Usage examples of "x-ray spectroscopy".
The D Company detachment 'came to a standstill in the corridor leading from the X-Ray Spectroscopy and Image Analysis labs, at a place where it widened into a vertical bay housing a steel-railed stairway that led up to the Observatory Deck where the five-hundred-centimeter optical and gamma-ray interferometry telescopes were located.