Abstract

Neutron tomographies were performed in a double crystal diffractometer (DCD) of bent crystal type. The recorded data from this DCD include much more information about the object than in common absorption tomography. This is due to the additional simultaneous registration of absorption, refraction, and small angle scattering of the neutron beam. The information especially of the small angle scattering data was used to reconstruct the two-dimensional image of the sample from its projections and to compare to the results of common absorption data images. For the first time, it was possible to reconstruct images of samples using USANS data only. This new imaging signal offers a number of new possibilities in high resolution non destructive testing.

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