Nuclear cross sections data on
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These filtered neutron beams have been applied efficiently for experimental researches on neutron total and capture cross sections measurements, and elemental analysis in various kinds of samples based on the prompt gamma neutron activation analysis method. This paper reviews the progress of filtered neutron beams development and its applications for past many years at the Dalat nuclear research reactor.
8p trinhthamhodang1218 14-03-2021 6 1 Download
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"The journal of Nuclear science and technology - Volume 9/Number 2, 2019" present on burnup modelling issues associated with vver–440 fuels; processing of the multigroup cross-sections for MCNP calculations; low-energy experiments at the s3 spectrometer; dosimetric characteristics of 6 MV photons from truebeam STX medical linear accelerator simulation and experimental data...
56p trinhthamhodang1218 14-03-2021 22 2 Download
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The study uses the data of the Philippines, Vietnam, and Thailand over the period of 1995-2017 as gathered from the World Bank and Global Economy. The study uses Brush Pagon LM and Pearson CD to test the cross-section dependence among variables while Levin et al., (2002) panel unit root test to check the stationary in the data. Westerlund (2007) cointegration and FMOLS tests are applied to analyze the long-run relationship.
8p nguaconbaynhay10 22-02-2021 12 4 Download
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This paper presents a Bayesian approach based on integral experiments to create correlations which do not appear with differential data. Some quantities such as the fission cross section (s), neutron multiplicity (n¯p), neutron spectra (x), etc. are usually neither modeled together nor measured in coincidence, thus there is no correlation matrices in evaluated nuclear data libraries.
8p christabelhuynh 30-05-2020 13 0 Download
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This article shows how the most recent gadolinium cross sections evaluations appear inadequate to provide accurate criticality calculations for a system with gadolinium fuel pins. In this article, a sensitivity and uncertainty analysis (S/U) has been performed to investigate the effect of gadolinium odd isotopes nuclear cross sections data on the multiplication factor of some LWR fuel assemblies.
11p christabelhuynh 30-05-2020 12 1 Download
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A correlated sampling technique has been implemented to estimate the impact of cross section modifications on the neutron transport and in Monte Carlo simulations in one single calculation. This implementation has been coupled to a Total Monte Carlo approach which consists in propagating nuclear data uncertainties with random cross section files.
9p christabelhuynh 29-05-2020 5 0 Download
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The aim of this paper is to describe how CESAR operates and how it can be used to help these facilities care for waste disposal, nuclear materials transport or basic safety cases. The test case will be based on the PHEBUS Facility located at CEA Cadarache.
10p christabelhuynh 29-05-2020 8 1 Download
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Sensitivity and uncertainty analysis in error propagation studies are carried out based on nuclear data uncertainty information available in the basic nuclear data libraries such as ENDF, JEFF, JENDL and others.
5p christabelhuynh 29-05-2020 7 0 Download
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Key reactions have been selected to compare JEFF-3.3 (CIELO 2) and IAEA CIELO (CIELO 1) evaluated nuclear data files for neutron induced reactions on 235U and 238U targets. IAEA CIELO evaluation uses reaction models to construct the evaluation prior, but strongly relied on differential data including all reaction cross sections fitted within the IAEA Neutron Standards project.
5p christabelhuynh 29-05-2020 10 0 Download
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This paper presents a study of the impact of the nuclear data (cross sections, neutron emission and spectra) on different quantities for spent nuclear fuels (SNF) from Swiss power plants: activities, decay heat, neutron and gamma sources and isotopic vectors.
15p christabelhuynh 29-05-2020 4 1 Download
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Comparisons of calculated and experimental isotopic compositions of used nuclear fuels can provide valuable information on the quality of nuclear data involved in neutronic calculations.
19p christabelhuynh 29-05-2020 8 1 Download
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The effects of nuclear data uncertainties are studied on a typical PWR fuel assembly model in the framework of the OECD Nuclear Energy Agency UAM (Uncertainty Analysis in Modeling) expert working group. The “Fast Total Monte Carlo” method is applied on a model for the Monte Carlo transport and burnup code SERPENT. Uncertainties on k∞, reaction rates, two-group cross sections, inventory and local pin power density during burnup are obtained, due to transport cross sections for the actinides and fission products, fission yields and thermal scattering data.
10p minhxaminhyeu5 30-06-2019 12 0 Download
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In this paper, nuclear data for cross sections of the 64Zn(n,2n)63Zn, 64Zn(n,3n)62Zn, 64Zn(n,p)64Cu, 66Zn(n,2n)65Zn, 66Zn(n,p)66Cu, 67Zn(n,p)67Cu, 68Zn(n,p)68Cu, and 68Zn(n,a) 65Ni reactions were studied for neutron energies up to 40 MeV. In the nuclear model calculations, TALYS 1.6, ALICE/ASH, and EMPIRE 3.2 codes were used. Furthermore, the nuclear data for the (n,2n) and (n,p) reaction channels were also calculated using various cross-section systematics at energies around 14e15 MeV.
10p minhxaminhyeu4 26-06-2019 14 0 Download
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This paper presents a feasibility study for producing the medical isotope 99mTc using the hazardous and currently wasted radioisotope 99Tc. This can be achieved with the nuclear resonance fluorescence (NRF) phenomenon, which has recently been made applicable due to high-intensity laser Compton scattering (LCS) photons. In this work, 21 NRF energy states of 99Tc have been identified as potential contributors to the photo-production of 99mTc and their NRF cross-sections are evaluated by using the single particle estimate model and the ENSDF data library.
14p minhxaminhyeu3 12-06-2019 11 0 Download
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One of the main missions of the Abdus Salam International Centre for Theoretical Physics in Trieste, Italy, founded in 1964, is to foster the growth of advanced studies and scientific research in developing countries. To this end, the Centre organizes a number of schools and workshops in a variety of physical and mathematical disciplines.
287p camnhung_1 13-12-2012 53 8 Download