X-ray plane-wave topography observation of the phase contrast from a non-crystalline object

Abstract

A technique for observation of the inner structure of objects is proposed. The sensitivity to variations in direction of the primary pseudo-plane beam which occurs on boundaries between media with slight differences in density values is impressive. Two types of contrasts are pointed out: 'area contrast' caused by slight deviation of the primary beam and 'boundary contrast'. Basic principles and experimental results are presented.