secondary fluorescence

in X-ray emission spectroscopy
https://doi.org/10.1351/goldbook.S05521
@I03183@ of the analyte element in a sample by characteristic @R05048@ from other elements in the sample resulting in an enhancement of the signal measured.
Source:
PAC, 1980, 52, 2541. (Nomenclature, Symbols, Units and their Usage in Spectrochemical Analysis—IV X-Ray Emission Spectroscopy) on page 2547 [Terms] [Paper]