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Measurement of the U-238(n,gamma) cross section up to 80 keV with the total absorption calorimeter at the CERN n_TOF facility

Authors: Wright, T.; Guerrero, C.; Billowes, J.; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere;

Measurement of the U-238(n,gamma) cross section up to 80 keV with the total absorption calorimeter at the CERN n_TOF facility

Abstract

The radiative capture cross section of a highly pure (99.999%), 6.125(2) grams and 9.56(5)E-4 atoms/barn areal density 238U sample has been measured with the Total Absorption Calorimeter (TAC) in the 185 m flight path at the CERN neutron time-of-flight facility n_TOF. This measurement is in response to the NEA High Priority Request list, which demands an accuracy in this cross section of less than 3% below 25 keV. These data have undergone careful background subtraction, with special care being given to the background originating from neutrons scattered by the 238U sample. Pileup and dead-time effects have been corrected for. The measured cross section covers an energy range between 0.2 eV and 80 keV, with an accuracy that varies with neutron energy, being better than 4% below 25 keV and reaching at most 6% at higher energies.

Country
Spain
Keywords

Neutrons, :Energies::Energia nuclear [Àrees temàtiques de la UPC], :Física [Àrees temàtiques de la UPC], Àrees temàtiques de la UPC::Física, Nuclear physics, Física nuclear, Àrees temàtiques de la UPC::Energies::Energia nuclear

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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