The Age of Polonium-Beryllium Neutrons in Various Metal-Water Mixtures

Melvin Reier; Felix Obenshain; Robert L. Hellens

doi:dx.doi.org/10.13182/NSE58-A25515

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Home / Publications / Journals / Nuclear Science and Engineering / Volume 4 / Number 1

The Age of Polonium-Beryllium Neutrons in Various Metal-Water Mixtures

Melvin Reier, Felix Obenshain, Robert L. Hellens

Nuclear Science and Engineering / Volume 4 / Number 1 / July 1958 / Pages 1-11

Technical Paper / dx.doi.org/10.13182/NSE58-A25515

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The slowing-down distribution of Po-Be neutrons has been measured in aluminum-water, zirconium-water, and iron-water mixtures up to metal water ratios of 2:1 by volume. The second moment of the distribution has been obtained from these measurements and compared with theoretical calculations based on a solution of the transport equation. The effect of varying the source spectrum and cross sections in the calculations is discussed.