Patent ID: 6631177
Filing Date: 2003-10-07
Classification: G01B,G01N

Abstract:
A device for measurement of the thickness of a first layer, comprising one or more sublayers, on a second layer of a metal sheet by X-ray fluorescence analysis, said device for measurement comprising:(a) means defining a specimen plane for supporting the metal sheet; (b) means for generating and directing a beam of polychromatic primary X-rays, said beam being able to penetrate into the first and second layers for converting primary X-rays into chemical element specific fluorescent X-rays by means of absorption of primary X-rays and re-emission of fluorescent X-rays by the chemical element; and (c) means for detecting element specific fluorescent X-rays and determining an intensity thereof, wherein the means for detection has been placed at an angle with respect to the primary beam of X-rays in dependence of the chemical element from which the fluorescent X-rays are to be detected.