Patent ID: 8537970

Claim:
An x-ray radiation device to generate quasi-monochromatic x-ray radiation, comprising: a punctiform radiation source that emits polychromatic x-ray radiation; a diffraction device on which said polychromatic x-ray radiation is incident, said diffraction device diffracting the polychromatic x-ray radiation incident thereon and having a super-mirror comprised of crystalline material having a flat surface, said crystalline material in said super-mirror having a crystal lattice exhibiting a lattice plane spacing that continuously varies within said crystal lattice; said diffraction device causing quasi-monochromatic x-ray radiation to be generated from a portion of the polychromatic x-ray radiation incident thereon by Bragg reflection at said super-mirror; and a displacement device that displaces said super-mirror in a displacement direction perpendicular to said flat surface, the displacement of said super-mirror in said direction perpendicular to said flat surface changing an energy band in which said quasi-monochromatic x-ray radiation is generated, and thereby allowing selection of said energy band dependent on said displacement.