Validation of ENDF/B-VIII thermal neutron scattering data of heavy water by differential cross section measurements at various temperatures

2020 ◽  
Vol 135 ◽  
pp. 106932 ◽  
Author(s):  
G. Li ◽  
G. Bentoumi ◽  
K. Hartling ◽  
I. Molnar ◽  
C. Neggers ◽  
...  
Keyword(s):  
Differential Cross Section ◽  
Neutron Scattering ◽  
Thermal Neutron ◽  
Cross Section ◽  
Heavy Water ◽  
Differential Cross ◽  
Scattering Data ◽  
Thermal Neutron Scattering

scholarly journals THERMAL NEUTRON SCATTERING CROSS-SECTION MEASUREMENTS OF HEAVY WATER

2016 ◽  
pp. 1-7
Author(s):  
Gang Li ◽  
Ghaouti Bentoumi ◽  
Zin Tun ◽  
Liqian Li ◽  
Bhaskar Sur
Keyword(s):  
Neutron Scattering ◽  
Thermal Neutron ◽  
Cross Section ◽  
Heavy Water ◽  
Scattering Cross Section ◽  
Scattering Cross ◽  
Thermal Neutron Scattering

scholarly journals Thermal neutron scattering data for 7LiF and BeF2

2017 ◽  
Vol 146 ◽  
pp. 13009
Author(s):  
Jia Wang ◽  
Hongzhou Song ◽  
Zehua Hu ◽  
Tao Ye ◽  
Weili Sun
Keyword(s):  
Neutron Scattering ◽  
Thermal Neutron ◽  
Scattering Data ◽  
Thermal Neutron Scattering

ANALYSIS OF p-4, 6, 8He AND p-6, 9, 11Li SCATTERING

2013 ◽  
Vol 22 (11) ◽  
pp. 1350082 ◽  
Author(s):  
Z. A. KHAN ◽  
DEEKSHA CHAUHAN ◽  
MINITA SINGH
Keyword(s):  
Differential Cross Section ◽  
Cross Section ◽  
Differential Cross ◽  
Scattering Data ◽  
Glauber Model ◽  
Neutron Density ◽  
Significant Discrepancy ◽  
Nucleon Density ◽  
Density Distributions ◽  
Dependent Part

Using the Coulomb modified Glauber model, we analyze the elastic scattering of protons from He and Li isotopes at 60 MeV and 72 MeV. The calculations require two inputs; the nucleon–nucleon (NN) amplitude and the nucleon density distributions in target nuclei. The central part of the NN amplitude is taken from the available NN scattering observables. To find the spin-dependent part, we employ p-4 He scattering data to fix its parameter values. For target nuclei, we use nucleon density distributions available in the literature. The NN amplitude, as obtained in this work, is then used to study the sensitivity of the calculated differential cross-section and polarization for p-6, 8 He scattering on the density distributions used. It is found that both the differential cross-section and polarization could provide a test to know which is the better choice of nucleon (especially neutron) density distributions. We also present the differential cross-sections for p-6, 9, 11 Li scattering at 60 MeV and 72 MeV in order to assess the suitability of the obtained NN amplitude. It is found that the results are in reasonable agreement with the experiment up to only moderate scattering angles, leaving significant discrepancy at large scattering angles. Our calculations suggest the need of medium modifications in the NN amplitude, arising due to Pauli blocking.

ON THE STRUCTURE OF π AND K MESONS

1987 ◽  
Vol 02 (06) ◽  
pp. 1829-1838 ◽  
Author(s):  
S.N. BANERJEE ◽  
R.K. DAS ◽  
A.K. SARKER
Keyword(s):  
Differential Cross Section ◽  
Statistical Model ◽  
Momentum Transfer ◽  
Cross Section ◽  
Differential Cross ◽  
Form Factors ◽  
Scattering Data ◽  
Elastic Differential Cross Section ◽  
K Mesons ◽  
Characteristic Features

We have investigated the form factors of the π and K mesons within the framework of the statistical model. Our results reveal several well-spaced minima and maxima for different values of Q2, the square of the momentum transfer. The characteristic features of the elastic differential cross section, dσ/dt, for π±P and K±P scattering data are well reproduced, as a consequence.

Differential cross section for neutron scattering fromBi209at 37 MeV and the weak particle-core coupling

2010 ◽  
Vol 82 (2) ◽  
Author(s):  
Zuying Zhou ◽  
Xichao Ruan ◽  
Yanfeng Du ◽  
Bujia Qi ◽  
Hongqing Tang ◽  
...  
Keyword(s):  
Differential Cross Section ◽  
Neutron Scattering ◽  
Cross Section ◽  
Differential Cross

On-the-Fly Treatment of Discrete Representation Thermal Neutron Scattering Data in RMC Code

2020 ◽  
Author(s):  
Lei Zheng ◽  
Kaiwen Li ◽  
Kan Wang
Keyword(s):  
Elastic Scattering ◽  
Neutron Scattering ◽  
Thermal Neutron ◽  
Interpolation Method ◽  
Beryllium Oxide ◽  
Scattering Data ◽  
Computational Time ◽  
Discrete Representation ◽  
Thermal Region ◽  
Thermal Neutron Scattering

Abstract A proper treatment of thermal neutron scattering data is required for the high-fidelity neutronics calculation of thermal reactors. Monte Carlo codes typically use an S(α, β) treatment to describe scattering events in the thermal region if the S(α, β) data is available for the material. The S(α,β) model stores a large majority of scattering physics and can handle thermal scattering process accurately. In neutronic-thermohydraulic coupling calculations, the temperature effect on nuclear data must be treated properly. The on-the-fly sampling method or the on-the-fly interpolation method are typically used in thermal region. In this paper, the on-the-fly interpolation method for the discrete representation S(α,β) data was introduced. The two-dimensional linear-linear interpolation was used to calculate the scattering cross sections and the secondary information for inelastic scattering, coherent elastic scattering and incoherent elastic scattering. The implemented on-the-fly capability was tested by a series of benchmarks that contain various thermal materials, including light water, beryllium and beryllium oxide. The integral kinf eigenvalues, the efficiency and the fine energy spectra of the on-the-fly treatment capacity were compared with those of the references. Results show that the on-the-fly treatment capability has high accuracy, and the computational time increases up to 20%.

Sign in / Sign up

Export Citation Format

Share Document