Measurement of delayed-neutron yield from 237Np fission induced by thermal neutrons

The delayed-neutron yield from thermal-neutron-induced fission of the 237Np nucleus was measured using a sample periodically exposed to a pulsed neutron beam with subsequent detection of neutrons during the time intervals between pulses. The experiment was realized on an Isomer-M setup mounted in th...

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Published inPhysics of atomic nuclei Vol. 70; no. 6; pp. 975 - 982
Main Authors Gundorin, N. A., Zhdanova, K. V., Zhuchko, V. E., Pikelner, L. B., Rebrova, N. V., Salamatin, I. M., Smirnov, V. I., Furman, V. I.
Format Journal Article
LanguageEnglish
Published New York Springer Nature B.V 01.06.2007
Subjects
Fission
Neptunium isotopes
Neutron beams
Neutron physics
Neutrons
Thermal neutrons
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Summary:The delayed-neutron yield from thermal-neutron-induced fission of the 237Np nucleus was measured using a sample periodically exposed to a pulsed neutron beam with subsequent detection of neutrons during the time intervals between pulses. The experiment was realized on an Isomer-M setup mounted in the IBR-2 pulsed reactor channel equipped with a mirror neutron guide. The setup and the experimental procedure are described, the background sources are thoroughly analyzed, and the experimental data are presented. The total delayed-neutron yield from 237Np fission induced by thermal neutrons is νd = 0.0110 ± 0.0009. This study was performed at the Frank Laboratory of Neutron Physics (JINR, Dubna).
ISSN:1063-7788
1562-692X
DOI:10.1134/S1063778807060014