Radioisotope-excited energy-dispersive x-ray fluorescence apparatus
Patent
·
OSTI ID:4192142
Radioisotope-excited, energy-dispersive, X-ray fluorescence apparatus for positioning a plurality of disc sources in annular configuration in a helium- filled compartment and about the window of the vacuum cryostat housing the detector is described. The specimen holder leaves the specimen in air and the area and spacing of the specimen, detector and sources are such as to optimize operation about the plateau of the count rate distance curve and to produce an essentially flat detector response profile curve, with a well-defined cutoff. (auth)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-33-000789
- Assignee:
- to Columbia Scientific Industries, Inc.
- Patent Number(s):
- US 3889113
- OSTI ID:
- 4192142
- Country of Publication:
- United States
- Language:
- English
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