Attenuation of 14.1-Mev Neutrons in Water

R. S. C<sc>ASWELL</sc>; R. F. G<sc>ABBARD</sc>; D. W. P<sc>ADGETT</sc>; W. P. D<sc>OERING</sc>

doi:dx.doi.org/10.13182/NSE57-A25383

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Home / Publications / Journals / Nuclear Science and Engineering / Volume 2 / Number 2

Attenuation of 14.1-Mev Neutrons in Water

R. S. CASWELL, R. F. GABBARD, D. W. PADGETT, W. P. DOERING

Nuclear Science and Engineering / Volume 2 / Number 2 / April 1957 / Pages 143-159

Technical Paper / dx.doi.org/10.13182/NSE57-A25383

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The attenuation of 14.1-Mev neutrons in water has been studied under conditions simulating an isotropic point source of monoenergetic neutrons in an infinite water medium. The migration area of thermal neutrons (⟨r²⟩th/6) was found to be 156 ± 6 cm². The “age” of indium resonance neutrons was measured to be 150 ± 6 cm². Fast neutron dose measurements are in agreement with the theoretical calculations of Goldstein et al.