X-Ray Crystal Collimators Using Successive Asymmetric Diffractions and Their Applications to Measurements of Diffraction Curves. II. Type I Collimator

A collimator classified as type I in a previous paper (J. Phys. Soc. Japan 29 (1970) 1322) is investigated, in which highly asymmetric reflections take place three times. In the collimator constructed, 422 reflections of silicon with CuK α 1 were used and the beam of an angular spread of 0.1'' of 0.01'' was obtained. The intensity distribution of the beam diffracted form the collimator was calculated. The measured diffraction curves were compared with the calculated ones.