1. Observation of subgrain boundaries and dislocations by neutron diffraction topography
- Author
-
J. Baruchel, M. Schlenker, J.F. Pétroff, and W. B. Yelon
- Subjects
Materials science ,Physics and Astronomy (miscellaneous) ,business.industry ,Resolution (electron density) ,Neutron diffraction ,chemistry.chemical_element ,Germanium ,law.invention ,Optics ,chemistry ,law ,Diffraction topography ,Neutron ,business ,Single crystal ,Beam (structure) ,Monochromator - Abstract
We have improved the resolution of neutron diffraction topography by working with a low‐divergence primary beam from a neutron guide tube and using an almost perfect monochromator. As a result, we have obtained neutron topographs revealing, although with a resolution still very inferior to that of x‐ray topography, subgrain boundaries and inclusions in a Fe‐2.5 wt% Si single crystal, as well as some individual dislocations in a germanium single crystal. Their contrast is compared with that of x‐ray topographs of the same specimens and discussed.
- Published
- 1974