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High-accuracy determination of the neutron flux at n TOF
- Source :
- UPCommons. Portal del coneixement obert de la UPC, Universitat Politècnica de Catalunya (UPC), Recercat. Dipósit de la Recerca de Catalunya, Universitat Jaume I, European Physical Journal A, European Physical Journal A, EDP Sciences, 2013, 49, pp.156. ⟨10.1140/epja/i2013-13156-x⟩, European Physical Journal A, 2013, 49, pp.156. ⟨10.1140/epja/i2013-13156-x⟩
- Publication Year :
- 2013
-
Abstract
- The neutron flux of the n TOF facility at CERN was measured, after installation of the new spallation target, with four different systems based on three neutron-converting reactions, which represent accepted cross sections standards in different energy regions. A careful comparison and combination of the different measurements allowed us to reach an unprecedented accuracy on the energy dependence of the neutron flux in the very wide range (thermal to 1 GeV) that characterizes the n TOF neutron beam. This is a pre-requisite for the high accuracy of cross section measurements at n TOF. An unexpected anomaly in the neutron-induced fission cross section of 235U is observed in the energy region between 10 and 30 keV, hinting at a possible overestimation of this important cross section, well above currently assigned uncertainties. © Società Italiana di Fisica / Springer-Verlag 2013.
- Subjects :
- Nuclear and High Energy Physics
Fission
Physics::Instrumentation and Detectors
Astrophysics::High Energy Astrophysical Phenomena
Flux
BEAM
neutron flux
n_TOF
Neutron
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
7. Clean energy
01 natural sciences
Nuclear physics
Cross section (physics)
Neutron flux
0103 physical sciences
CERN
Nuclear fusion
High pressure physics
Spallation
FACILITY
Experimental physics
010306 general physics
Nuclear Experiment
Physics
Neutrons
Energies::Energia nuclear [Àrees temàtiques de la UPC]
Física [Àrees temàtiques de la UPC]
010308 nuclear & particles physics
SCIENCE
Neutron radiation
Ntof
13. Climate action
STANDARDS
Subjects
Details
- Language :
- English
- ISSN :
- 14346001 and 1434601X
- Database :
- OpenAIRE
- Journal :
- UPCommons. Portal del coneixement obert de la UPC, Universitat Politècnica de Catalunya (UPC), Recercat. Dipósit de la Recerca de Catalunya, Universitat Jaume I, European Physical Journal A, European Physical Journal A, EDP Sciences, 2013, 49, pp.156. ⟨10.1140/epja/i2013-13156-x⟩, European Physical Journal A, 2013, 49, pp.156. ⟨10.1140/epja/i2013-13156-x⟩
- Accession number :
- edsair.doi.dedup.....e7a154a00b0b41c10da2c068892582bb
- Full Text :
- https://doi.org/10.1140/epja/i2013-13156-x