Patent ID: 7684543

Claim:
An X-ray beam conditioning device comprising: a crystal holder for supporting both a first crystal block that diffracts X-ray by a specific diffraction angle and a second crystal block that diffracts X-ray by a specific diffraction angle, said first crystal block and said second crystal block being fixedly mounted on said crystal holder, respectively, so that said second crystal block is configured to diffract X-ray emerging from said first crystal block; and crystal-angle adjusting means for rotating said crystal holder around an axis extending at a right angle to a plane including an optical axis of X-ray, and fixedly supporting said crystal holder at the rotated position, wherein said crystal holder rigidly holds said first crystal block and said second crystal block at such an angle to each other that both crystal blocks diffract X-ray, and said first crystal block and said second crystal block are channel-cut crystals that each have two X-ray reflecting surfaces, which oppose each other, said first crystal block is positioned nearer an X-ray source than said second crystal block, said crystal-angle adjusting means rotates said crystal holder to change an angle at which X-ray generated by said X-ray source is applied to one X-ray reflecting surface of said first crystal block, and a rotation axis of said crystal holder extends in one X-ray reflecting surface of said first crystal block.