Patent ID: 7551719

Claim:
An apparatus for analyzing a sample, the apparatus comprising: a radiation source, which is adapted to direct a first, converging beam of X-rays toward a surface of the sample and to direct a second, collimated beam of the X-rays toward the surface of the sample, and which comprises: an X-ray tube, which is operative to emit the X-rays; a first mirror, which is arranged to receive and focus the X-rays into the converging beam; and a second mirror, which is arranged to receive and focus the X-rays into the collimated beam; a detector assembly, which is arranged to sense the X-rays scattered from the sample as a function of angle responsively to either of the converging beam and the collimated beam, and to generate output signals responsively to the scattered X-rays; and a signal processor, which is coupled to receive and process the output signals so as to determine a characteristic of the sample.