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- Title
PHOTONEUTRON CROSS-SECTION MEASUREMENTS FOR <sup>165</sup>Ho BY THE DIRECT NEUTRON-MULTIPLICITY SORTING AT NEWSUBARU.
- Authors
KRZYSIEK, M.; UTSUNOMIYA, H.; GHEORGHE, I.; FILIPESCU, D. M.; RENSTRØM, T.; TVETEN, G. M.; BELYSHEV, S.; STOPANI, K.; WANG, H.; FAN, G.; LUI, Y.-W.; SYMOCHKO, D.; GORIELY, S.; LARSEN, A.-C.; SIEM, S.; VARLAMOV, V.; ISHKHANOV, B.; ARI-IZUMI, T.; MIYAMOTO, S.
- Abstract
The Coordinated Research Project of the International Atomic Energy Agency (IAEA CRP-F41032) was launched with a goal to publish two compilations of an updated photonuclear data library and a reference database of photon strength functions. The PHOENIX (PHOto-Excitation and Neutron emIssion cross [X] sections) Collaboration has been established for the IAEA-CRP in the γ-ray beam line GACKO (GAmma Collaboration hutch of KOnan university) of the NewSUBARU synchrotron radiation facility in Japan. The collaboration provides (; xn) cross-section data to resolve the long-standing discrepancy between the Livermore and Saclay data on partial photoneutron cross sections. For the IAEA-CRP, a flat-efficiency neutron detector (FED) for (γxn) cross-section measurements was developed. The detector consists of ³He counters arranged in three concentric rings embedded in a polyethylene moderator. Due to the fact that the efficiency of the detector is constant for the neutron energies up to several MeV, it is possible to determine the partial photoneutron reactions cross sections using direct neutron-multiplicity sorting technique. The paper gives details of the experimental setup and data analysis, and preliminary results of total neutron-production cross sections in monochromatic approximation for 165Ho nucleus.
- Subjects
JAPAN; INTERNATIONAL Atomic Energy Agency; SYNCHROTRON radiation; NUCLEAR energy; NEUTRON counters; NEUTRON temperature; NEUTRON emission; DATA libraries
- Publication
Acta Physica Polonica B, 2019, Vol 50, Issue 3, p487
- ISSN
0587-4254
- Publication type
Article
- DOI
10.5506/APhysPolB.50.487