Integral measurement of the 12 C ( n , p ) 12 B reaction up to 10 GeV
نویسندگان
چکیده
The integral measurement of the C(n,p)B reaction was performed at the neutron time of flight facility n TOF at CERN. The total number of 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 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 C(n,p)B reaction are compared with the evaluated cross sections from major libraries and with the predictions of different GEANT4 models, which mostly underestimate the 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.
منابع مشابه
Integral cross section measurement of the 12C(n,p)12B reaction
The integral cross section of the 12C(n, p)12B reaction was measured at the neutron time of flight facility n_TOF at CERN, from the reaction threshold at 13.6 MeV up to 10 GeV, by means of the combined activation and a time-offlight technique. The integral result is expressed as the number of 12B nuclei produced per single pulse of the neutron beam. A simple integral expression is given for cal...
متن کاملStudy of the Short Range Properties of Nucleons at Q 2 ≤ 12 GeV 2 Using d ( e , e ’ p ) n With CLAS 12 A Proposal to PAC 30
We are proposing to search for two possible QCD phenomena, Point Like Configurations (PLC) in the proton wave function, and modification of (deeply bound) nucleons involved in Short Range Correlations. We will use the exclusive d(e, e′p)n reaction, which is the most understood nucleon knockout reaction. This search will be an extension of the CLAS e6 experiment, which found no evidence for PLC ...
متن کاملSPLINE COLLOCATION FOR NONLINEAR FREDHOLM INTEGRAL EQUATIONS
The collocation method based on cubic B-spline, is developed to approximate the solution of second kind nonlinear Fredholm integral equations. First of all, we collocate the solution by B-spline collocation method then the Newton-Cotes formula use to approximate the integrand. Convergence analysis has been investigated and proved that the quadrature rule is third order convergent. The presented...
متن کاملA green synthesis of di-indolyloxindols catalyzed by CuO/g-C3N4 nanocomposite under mild conditions
In this study, novel CuO/g-C3N4 nanocomposite was simply synthesized by impregnation of g-C3N4 with CuO nanoparticles. Then, the heterogeneous catalyst was characterized by various techniques including Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), thermogravimetric analysis (TGA) and transmission electron microscopy (...
متن کاملA green synthesis of di-indolyloxindols catalyzed by CuO/g-C3N4 nanocomposite under mild conditions
In this study, novel CuO/g-C3N4 nanocomposite was simply synthesized by impregnation of g-C3N4 with CuO nanoparticles. Then, the heterogeneous catalyst was characterized by various techniques including Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), thermogravimetric analysis (TGA) and transmission electron microscopy (...
متن کامل