Abstract
WORK on the scattering of long wave-length neutrons by irradiation-induced defects have been carried out by Antal, Weiss and Dienes for graphite1 and by Antal and Goland for alumina2. The method depends on the fact that in materials of low neutron absorption cross-section, neutrons of wave-length greater than the Bragg cut-off are attenuated principally by inelastic scattering (for which the cross-section is a few hundred millibarns) and by the scattering from defects. Application of Babinet's principle shows that each isolated point defect introduces an amount of scattering equal to the free atom cross-section of the material.
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References
Antal, J. J., Weiss, R. J., and Dienes, G. J., Phys. Rev., 99, 1081 (1955).
Antal, J. J., and Goland, A. N., Phys. Rev., 112, 103 (1958).
Huntington, H. B., Phys. Rev., 91, 1092 (1953).
James, R. W., The Optical Principles of the Diffraction of X-rays (G. Bell and Sons, Ltd., 1958).
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SABINE, T., PRYOR, A. & HICKMAN, B. Scattering of Long Wave-length Neutrons by Irradiated Beryllium Oxide. Nature 191, 1385–1386 (1961). https://doi.org/10.1038/1911385a0
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DOI: https://doi.org/10.1038/1911385a0
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