Measurement of the effective delayed-neutron dose by the [alpha]-Rossi method in water-containing media

A modified method of determining the effective delayed-neutron dose is proposed. The method is based on a combination of determining the pseudoreactivity of the ^sup 252^Cf source and measuring the α-Rossi time distribution. The advantage of the method proposed here is that there is no need to measu...

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Published inAtomic energy (New York, N.Y.) Vol. 100; no. 5; pp. 370 - 375
Main Author Dulin, V A
Format Journal Article
LanguageEnglish
Published New York Springer Nature B.V 01.05.2006
Subjects
Assembly
Atomic energy
Detectors
Fission
Media
Moderators
Neutrons
Nuclear physics
Nuclear power generation
Spontaneous
Studies
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Summary:A modified method of determining the effective delayed-neutron dose is proposed. The method is based on a combination of determining the pseudoreactivity of the ^sup 252^Cf source and measuring the α-Rossi time distribution. The advantage of the method proposed here is that there is no need to measure the absolute rate of fissioning of the nuclei in the medium. It is proposed that the latter be expressed in terms of the intensity of a known source of spontaneous fissions of ^sup 252^Cf nuclei. The measurements are performed on an assembly with a hydrogen-containing moderator. The influence of the positions of the detectors (^sup 3^He counters) on the measured effective delayed-neutron fraction is studied.[PUBLICATION ABSTRACT]
Bibliography:ObjectType-Article-2
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ISSN:1063-4258
1573-8205
DOI:10.1007/s10512-006-0096-2