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Primary-Recoil Atom Spectra from ENDF/B Data

J. D. Jenkins

Nuclear Science and Engineering

Volume 41 / Number 2 / August 1970 / Pages 155-163


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Information from the Evaluated Nuclear Data File (ENDF/B) has been used to construct energy-exchange kernels describing the energy transfer probabilities between neutrons and material lattice atoms. The kernels correctly incorporate all the available information on elastic scattering and inelastic scattering contained in ENDF/B. Their use removes much of the uncertainty in the calculation of primary-recoil spectra. Primary-recoil atom spectra for several elements in different reactor spectra have been generated. The influence of inelastic scattering on the recoil spectra is discussed. Results obtained with the ENDF/B data are compared with previously published information.

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