Observation of subgrain boundaries and dislocations by neutron diffraction topography
- 1 October 1974
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 25 (7), 382-384
- https://doi.org/10.1063/1.1655517
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.Keywords
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