X-ray or gamma ray systems or devices – Specific application – Fluorescence
Patent
1987-12-16
1990-09-25
Howell, Janice A.
X-ray or gamma ray systems or devices
Specific application
Fluorescence
378 45, 378 48, 378 49, 378 50, G01N 23223
Patent
active
049598481
ABSTRACT:
A device which measures both the thickness of a thin film and the concentration of selected elements within the thin film. An X-ray source is utilized to irradiate the thin film sample and two detectors, an energy dispersive detector and a wavelength dispersive detector, provide the film thickness and element concentration measurements respectively.
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AXIC Inc.
Freeman John C.
Howell Janice A.
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