resonance fluorescence
@F02453@ from the primary excited atomic or molecular species at the @W06659@ of the exciting radiation (no @R05285@ within the excited manifold). This term is also used to designate the radiation emitted by an atom of the same @W06659@ as the longest one capable of exciting its @F02453@, e.g. \(122.6\ \text{nm}\) in the case of the hydrogen atom, and \(253.7\ \text{nm}\) in the case of the mercury atom.
See also:
resonance line (in photochemistry)
PAC, 1996, 68, 2223. (Glossary of terms used in photochemistry (IUPAC Recommendations 1996)) on page 2271 [Terms] [Paper]