resonance fluorescence technique

https://doi.org/10.1351/goldbook.R05336
The @MT06831@ of atoms or radicals generated in the gas phase by observing the intensity of @F02453@ (@E02264@) emitted by the species after excitation with radiation of the same @W06659@.
Source:
PAC, 1996, 68, 2223. (Glossary of terms used in photochemistry (IUPAC Recommendations 1996)) on page 2271 [Terms] [Paper]