Integral measurement of the ${}^{12}$C(n,p)${}^{12}$B reaction up to 10 GeV

Abstract

The integral measurement of the ${}^{12}$C(n,p)${}^{12}$B reaction was performed at the neutron time of flight facility n_TOF at CERN. The total number of ${}^{12}$B nuclei produced per neutron pulse of the n_TOF beam was determined using the activation technique in combination with a time of flight technique. The cross section is integrated over the n_TOF neutron energy spectrum from reaction threshold at 13.6 MeV to 10 GeV. Having been measured up to 1 GeV on basis of the ${}^{235}$U(n,f) reaction, the neutron energy spectrum above 200 MeV has been reevaluated due to the recent extension of the cross section reference for this particular reaction, which is otherwise considered a standard up to 200 MeV. The results from the dedicated GEANT4 simulations have been used to evaluate the neutron flux from 1 GeV up to 10 GeV. The experimental results related to the ${}^{12}$C(n,p)${}^{12}$B reaction are compared with the evaluated cross sections from major libraries and with the predictions of different GEANT4 models, which mostly underestimate the ${}^{12}$B production. On the contrary, a good reproduction of the integral cross section derived from measurements is obtained with TALYS-1.6 calculations, with optimized parameters.

arXiv comment14 pages, 11 figures, 3 tables

References in corpus (4)

• Extension of the Liège Intranuclear-Cascade model to reactions induced by light nuclei
• GEANT4 simulation of the neutron background of the C${}_6$D${}_6$ set-up for capture studies at n_TOF
• Experimental neutron capture data of ${}^{58}$Ni from the CERN n_TOF facility
• Measurement of the ${}^{12}$C($n,p$)${}^{12}$B cross section at n_TOF (CERN) by in-beam activation analysis

Cited by in corpus (5)

• Machine learning based event classification for the energy-differential measurement of the ${}^{\text{nat}}$C(n,p) and ${}^{\text{nat}}$C(n,d) reactions
• Study of a data analysis method for the angle resolving silicon telescope
• A synchronization method for the multi-channel silicon telescope
• Measurement of the ${}^{\text{nat}}$C(n,p) and ${}^{\text{nat}}$C(n,d) reactions from n_TOF at CERN
• Energy-differential measurement of the ${}^{\mathrm{nat}}$C(n,p) and ${}^{\mathrm{nat}}$C(n,d) reactions at the n_TOF facility at CERN