Patent ID: 6807251
Filing Date: 2004-10-19
Classification: G01N

Abstract:
X-ray diffraction apparatus in which an X-ray source emits an X-ray beam which is incident upon a sample, diffracted by said sample and detected by an X-ray detector, comprises:(a) a first incident path along which said X-ray beam is incident upon said sample with a predetermined divergence angle; (b) a second incident path along which said X-ray beam is reflected by a parabolic multilayer mirror to become a parallel beam and thereafter incident upon said sample; (c) a path-selection slit device which can open any one of said first incident path and said second incident path whereas close off the other of said first incident path and said second incident path; (d) an X-ray source in which a position of X-ray generation does not vary independently upon selection of said first incident path or said second incident path; and (e) a sample holder in which a center position of said sample does not vary independently upon selection of said first incident path or said second incident path.