Abstract
Elastic scattering cross-sections of lead, tantalum and molybdenum were determined with the help of a Ge (Li) detector for 1.17 and 1.33 MeV rays between 30° and 115°. Theoretical evaluations of the cross-sections are based on a coherent addition of the well-known nuclear Thomson scattering amplitudes, the Rayleigh amplitudes calculated by Kissel and Pratt and the Delbrück amplitudes given by Papatzacos and Mork. The fairly good agreement between experiment and theory reveals the importance of the real Delbrück amplitudes. However, the experimental results in the 30–60° range tend to lie slightly but systematically below the calculated cross-sections.
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Work supported in part by a grant from the National Bureau of Standards, Washington, DC under the SFCP programme.
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Basavaraju, G., Kane, P.P. & Varier, K.M. Elastic scattering of 1.17 and 1.33 MeV gamma rays by molybdenum, tantalum and lead. Pramana - J. Phys 12, 665–678 (1979). https://doi.org/10.1007/BF02846856
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DOI: https://doi.org/10.1007/BF02846856