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First results on the neutron-induced fission cross-section of Pa-231 for incident neutron energies E-n > 17 MeV
European Commission JRC-IRMM, Institute for Reference Materials and Measurements, Geel, Belgium.
Örebro University, School of Science and Technology.
Örebro University, School of Science and Technology.
European Commission JRC-IRMM, Institute for Reference Materials and Measurements, Geel, Belgium.
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2012 (English)In: Annals of Nuclear Energy, ISSN 0306-4549, E-ISSN 1873-2100, Vol. 43, p. 26-30Article in journal (Refereed) Published
Abstract [en]

First results on the neutron-induced fission cross-section of Pa-231 for incident neutron energies E-n > 17 MeV are presented. The experiments were carried out with quasi mono-energetic neutrons produced in the reaction T(d, n)He-4. Corrections for low-energy neutron background produced in this reaction at incident deuteron energies E-d > 2 MeV are taken into account and based on experimental data obtained by two different techniques. Despite the relatively large error bars at the higher neutron energies, the new cross-section values meet the accuracy requirements set by the IAEA and will allow to remove the hitherto existing large spread between different previously published data. Recent cross-section calculations describe well the new experimental results, which are in consistency with cross-section values obtained in a particle-transfer reaction at excitation energies corresponding to neutron energies E-n < 10 MeV. 

Place, publisher, year, edition, pages
Elsevier, 2012. Vol. 43, p. 26-30
Keywords [en]
Protactinium-231, Neutron-induced fission cross-section, Third chance fission of Pa-231, E-n > 17 MeV
National Category
Physical Sciences
Research subject
Physics
Identifiers
URN: urn:nbn:se:oru:diva-22712DOI: 10.1016/j.anucene.2011.12.023ISI: 000302426000005Scopus ID: 2-s2.0-84855910119OAI: oai:DiVA.org:oru-22712DiVA, id: diva2:524747
Available from: 2012-05-03 Created: 2012-05-03 Last updated: 2018-05-08Bibliographically approved

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Oberstedt, AndreasBirgersson, Evert

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