%0 Journal Article
%T High-accuracy determination of the U-238/U-235 fission cross section ratio up to approximate to 1 GeV at n_TOF at CERN
%A n_TOF Collaboration (Paradela, C. et al
%A Domingo-Pardo, C.
%A Giubrone, G.
%A Tain, J. L.
%J Physical Review C
%D 2015
%V 91
%N 2
%I Amer Physical Soc
%@ 0556-2813
%G English
%F n_TOFCollaborationParadela_etal2015
%O WOS:000350174000004
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=2139), last updated on Thu, 26 Mar 2015 10:34:17 +0000
%X The U-238 to U-235 fission cross section ratio has been determined at n_TOF up to approximate to 1 GeV, with two different detection systems, in different geometrical configurations. A total of four datasets has been collected and compared. They are all consistent to each other within the relative systematic uncertainty of 3-4%. The data collected at n_TOF have been suitably combined to yield a unique fission cross section ratio as a function of neutron energy. The result confirms current evaluations up to 200 MeV. Good agreement is also observed with theoretical calculations based on the INCL++ /Gemini++ combination up to the highest measured energy. The n_TOF results may help solve a long-standing discrepancy between the two most important experimental datasets available so far above 20 MeV, while extending the neutron energy range for the first time up to approximate to 1 GeV.
%R 10.1103/PhysRevC.91.024602
%U http://arxiv.org/abs/1410.7737
%U https://doi.org/10.1103/PhysRevC.91.024602
%P 024602-11pp