Patent ID: 6359964
Filing Date: 2002-03-19
Classification: G01N

Abstract:
An X-ray analysis apparatus which includes:a sample location (8) for receiving a sample (10) to be examined, an X-ray source (7) for irradiating the sample (10) by means of X-rays, a detector (30) for detecting X-rays emanating from the sample (10), an influencing device (46, 48) which is constructed as a single mechanical unit (66), serves to influence the X-rays, and is arranged in a beam path (42, 45) between the X-ray source (7) and the detector (30), said device including two x-ray optical elements including a monochromatizing element (48) and an X-ray mirror (46) with a second-order reflecting surface (50), at least one of said two X-ray optical elements (46, 48) being situated in said beam path (42, 45), a frame (2) for positioning at least the influencing device in the beam path between the X-ray source and the detector, characterized in that the influencing device (46, 48) is constructed so as to include a first radiation channel (42, 52, 62) which comprises the X-ray mirror (46) and the monochromatizing element (48), and a second radiation channel (42, 52, 64) which comprises only the X-ray mirror (46), the influencing device, constructed as a single mechanical unit (66), and the frame (2) of the apparatus are both provided with co-operating positioning means (68a, 68b, 70) which are constructed in such a manner that the influencing device in the apparatus can occupy, at option, a first position (74) in which the first radiation channel (42, 52, 62) is positioned in said beam path, or a second position (76) in which the second radiation channel (42, 52, 64) is positioned in said beam path.