Patent ID: 8488744

Claim:
An X-ray measurement apparatus comprising: an X-ray source configured to emit an X-ray to irradiate a specimen with the X-ray; a collimator configured to shape a conical beam of the X-ray emitted from the X-ray source into a sliced fan-shaped beam x-ray; a flux shield placed between the collimator and the specimen and configured to pass or block a part of a flux of the fan-shaped beam X-ray so as to suppress beam hardening while adjusting an energy intensity distribution of the flux; and an X-ray detector configured to detect a dose transmitted through the specimen; wherein the flux shield is substantially plate shaped, having a substantially planar major surface with a central portion and a peripheral portion, said flux shield having formed therein a plurality of slits, a plurality of holes, or a plurality of opening portions, wherein, the plurality of slits, the plurality of holes, or the plurality of opening portions are arranged varyingly in said central portion and peripheral portion so as to effect said passing or blocking of the fan-shaped X-ray, wherein, said plurality of slits, the plurality of holes, or the plurality of opening portions are formed by fine processing, and wherein, said plurality of slits, the plurality of holes, or the plurality of opening portions are sized to be small relative to a size and a pitch of a detection device of the X-ray detector.