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Analysis of the Amplification of Deuterium-Tritium Neutron Sources: Part 2-Application

M. Segev, S. Taczanowski

Nuclear Science and Engineering

Volume 91 / Number 2 / October 1985 / Pages 153-161


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The energy distribution of neutrons, from the source energy of 14 MeV down to the (n,2n) threshold, can be approximated by effective one-group cross sections for such high and medium mass number elements as lead, copper, zirconium, and iron. The same is true for 238U, when the fast fission factor ϵ is applied in a special manner to account for the added multiplication below the (n,2n) threshold. Two groups are required to obtain a reasonable description of the amplification in beryllium.

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