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Journal articles
High-accuracy determination of the neutron flux at n_TOF
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 30keV, hinting at a possible overestimation of this important cross section, well above currently assigned uncertainties.
http://hal.in2p3.fr/in2p3-00933217
Contributor : Sophie Heurteau Connect in order to contact the contributor
Submitted on : Monday, January 20, 2014 - 10:59:46 AM
Last modification on : Tuesday, December 14, 2021 - 3:48:04 AM
Contributor : Sophie Heurteau Connect in order to contact the contributor
Submitted on : Monday, January 20, 2014 - 10:59:46 AM
Last modification on : Tuesday, December 14, 2021 - 3:48:04 AM
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