Interferometrie mit R��ntgen- und Neutronenstrahlen. Fl��ssige Kristalle: Strukturen Eigenschaften und Bedeutung

Using Bragg-diffraction from perfect single crystals it becomes possible to split coherently deviate about large angles and finally superimpose X-rays and thermal neutron beams in the same manner as has been possible for a long time with visible light. Interferometry with angstrom range radiation furnishes information about phases and amplitudes of scattered waves the structure of defects in nearly perfect crystals and­ in the neutron case - about nuclear and magnetic scattering processes. Interferometric precision has thus become available on the very atomic scale. Literatur 1 U. Bonse M. Hart: Appl. Phys. Lett. 6 155 (1965). 2 H. Rauch W. Treimer U. Bonse: Phys. Lett. 47 A 369 (1974). 3 W. Bauspiess U. Bonse H. Rauch W. Treimer: Z. Physik 271 177 (1974). U. Bonse: Present State of X-ray Interferometry; in Proceedings of the 5th Int. Congr. on X-Ray Optics and Microanalysis ed. by G. Mollenstedt und K. H. Gaukler (Springer: Berlin Heidelberg New York 1969) 1-10. 5 M. Hart: Rep. on Prog. Phys. 34435 (1971). 6 M. Hart: Proc. R. Soc. A 346 1 (1975). 7 U. Bonse W. Graeff: X-Ray and Neutron Interferometry; in X-Ray Optics ed. by H.J. Queisser (Springer: Berlin Heidelberg New York 1977) 93-143. 8 M. Ando S. Hosoya: \An Attempt at X-Ray Phase Contrast Microscopy\ in Proceedings of the Sixth Int. Conf. on X-Ray Optics and Microanalysis ed. by G. Shinoda K. Kohra and T. Ichinokawa (University of Tokyo Press 1972) pp.63-68.