(under subclass 1) Subject matter including the measurement or analysis of secondary X-rays resulting from the excitation by primary x-radiation or gamma radiation of analyte atoms.
(1) Note. Although not specifically include within each of the following definitions, fluorescence systems usually
include (a) a source of primary X-rays or gamma rays, (b) an analyte which emits fluorescent X-rays, (c) an analyte holder or positioning means, and (d) a detector of the fluorescent X-rays.
SEE OR SEARCH THIS CLASS, SUBCLASS:
3, for Mossbauer effect devices.
6, for fluorescence or scatter mapping.
143, for sources which produce secondary X-rays.
SEE OR SEARCH CLASS 209, Classifying, Separating, and Assorting Solids, appropriate subclasses, especially
589, for radiant energy type automatic assorting.
250, Radiant Energy,
306+, for sample bombardment with protons or electrons which may produce X-rays and subclasses 253+ for geological surveying.
376, Induced Nuclear Reactions: Processes, Systems, and Elements,
156+, for X-rays generated by means of an induced nuclear reaction, e.g., wherein the internal conversion of an electron within the nucleus generates soft gamma rays.
