Home / Store / Journals / Electronic Articles / Nuclear Science and Engineering / Volume 12 / Number 4
R. Perez-Belles, J. D. Kington, G. Desaussure
Nuclear Science and Engineering
Volume 12 / Number 4 / April 1962 / Pages 505-512
Format:electronic copy (download)
The value of the effective delayed neutron fraction has been measured for a compact loading of the BSR-I by the boron-substitution technique. The value obtained was 0.0080 ± 0.0002. By adopting the value of the true delayed neutron fraction. β = 0.0064 ± 0.0002, measured by Keepin et al., the ratio of the effective delayed-neutron fraction to the true delayed-neutron fraction is found to be 1.25 ± 0.05. When this quantity was computed by a three-group PDQ-code calculation, the result was 1.25, an agreement which suggests the validity of the computational method.
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