Practical application of three beam diffraction experiments

The experimental setup for the measurement of triplet phases by means of three beam interference experiments is discussed. Attention is drawn to the influence of crystal quality, size of the unit cell, different radiation sources and diffractomcter design.

Further on, the application of the three beam method to determine the absolute structure of non-centrosymmetric organic light atom structures is discussed. Also first experiments to exploit experimental phase information in a structure solution process are presented.