Nuclear reaction modeling

Part 2 book "Quantum physics" by author Robert Eisberg includes content: Multielectron atoms — optical excitations, quantum statistics; molecules; solids — conductors and semiconductors; solids — superconductors and magnetic properties; nuclear models; nuclear decay and nuclear reactions; introduction to elementary particles; more elementary particles.

502p muasambanhan10 06-04-2024 1 0   Download

Part 1 book "Nuclear and particle physics" includes content: The atomic nucleus, experimental techniques, general properties of nuclei, nuclear models, decal of unstable nuclei, nuclear reactions.

381p muasambanhan09 16-03-2024 2 1   Download

Part 2 book "Quantum physics of atoms, molecules, solids, nuclei, and particles" includes content: Multielectron atoms — optical excitations; quantum statistics; molecules; solids — conductors and semiconductors; solids — superconductors and magnetic properties; nuclear models; nuclear decay and nuclear reactions; introduction to elementary particles; more elementary particles.

502p muasambanhan07 18-02-2024 2 1   Download

Part 1 book "An introduction to nuclear physics" includes content: Prologue, leptons and the electromagnetic and weak interactions, nucleons and the strong interaction, nuclear sizes and nuclear masses, alpha decay and spontaneous fission, ground-state properties of nuclei - the shell model, excited states of nuclei, nuclear reactions, power from nuclear fission.

147p muasambanhan07 08-02-2024 1 0   Download

The W isotopic compositions have been investigated within the classical approach to the sprocess nucleosynthesis. The Maxwellian averaged neutron capture cross-sections (MACS) adopted in the calculation are obtained from the TALYS-1.9 code with four nuclear level density models: the constant temperature plus Fermi gas, the back-shifted Fermi gas, the generalised superfluid, and the microscopic method of Goriely.

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An overview on the first experimental project, which is granted by the Ministry of Science and Technlogy (MOST) as part of the project Grant No. Then, the details of the project for astrophysics reaction measurements will be presented.

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Nuclear reactions of proton by light nuclei at low energies play a key role in the study of nucleosynthesis which is of interest in nuclear astrophysics. The most fundamental process which is very necessary is the elastic scattering. In this work, we construct a microscopic proton-nucleus potential in order to describe the differential cross-sections over scattering angles of the proton elastic scattering by 12C and 13C in the range of available energies 14 - 22 MeV. The microscopic optical potential is based on the folding model using the effective nucleon-nucleon interaction CDM3Yn.

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Highly desirable to have the OP for both the entrance and exit channels determined from the optical model (OM) analysis of the elastic scattering of the same systems at the nearby energies, to accurately determine the corresponding spectroscopic factors. In the present work, such a procedure is carried out to determine the spectroscopic factors of 16O from the CRC analysis of the 16O(d,6 Li) reaction.

8p trinhthamhodang1218 14-03-2021 5 1   Download

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

It is also well known that the knowledge of nuclear reaction mechanisms is at best approximate, and that their modeling relies on many parameters which do not have a precise physical meaning outside of their specific implementations in nuclear model codes: they carry both specific physical information, and effective information that is related to the deficiencies of the model itself.

8p christabelhuynh 29-05-2020 5 1   Download

Although the pathogenesis of paediatric-onset autoimmune hepatitis (pAIH) remains incompletely understood, genetic variants and environmental factors are known to be involved. Caspase recruitment domain family member 10 (CARD10) is a scaffold protein that participates in a complex pathway activating nuclear factor kappa-B (NFjB) and tumour necrosis factor alpha (TNF-a). This study aimed to investigate the association of CARD10 rs6000782 (g.37928186A > C) and TNF gene promoter rs1799724 (c.-1037C > T) variants with pAIH susceptibility in a cohort of Egyptian children.

8p trinhthamhodang1 14-11-2019 40 2   Download

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

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.

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Displacement cross-sections for an advanced assessment of radiation damage rates were obtained for a number of materials using the arc-dpa model at neutron incident energies from 10
5 eV to 10 GeV. Evaluated data files, CEM03 and ECIS codes, and an approximate approach were applied for the calculation of recoil energy distributions in neutron induced reactions.

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The TRIGA fuel of the Philippine Research Reactor-1 (PRR-1) will be used in a subcritical reactor assembly (SRA) to strengthen and advance nuclear science and engineering expertise in the Philippines. SRA offers a versatile and safe training and research facility since it can produce neutrons through nuclear fission reaction without achieving criticality. In this work, we used a geometrically detailed model of the PRR-1 TRIGA fuel to design a subcritical reactor assembly and calculate physical parameters of different fuel configuration.

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64Cu is a favorable radionuclide in nuclear medicine applications because of its unique characteristics such as three types of decay (electron capture, b
and bþ) and 12.7 h half-life. Production of 64Cu by irradiation natCu and natCuNPs in Tehran Research Reactor was investigated. The characteristics of copper nanoparticles were investigated with SEM, TEM and XRD analysis. The cross section of 63Cu(n,g) 64Cu reaction was done with TALYS-1.8 code.

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The aim of the present study was to develop model for detonation cell sizes prediction based on a deep artificial neural network of hydrogen, methane and propane mixtures with air and oxygen. The discussion about the currently available algorithms compared existing solutions and resulted in a conclusion that there is a need for a new model, free from uncertainty of the effective activation energy and the reaction length definitions.

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The present work aims to report the consequences of DarcyeForchheimer medium in flow of Cross fluid model toward a stretched surface. Flow in porous space is categorized by DarcyeForchheimer medium. Further heat transfer characteristics are examined via thermal radiation and heat generation/absorption. Transformation procedure is used.

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The folded potentials at the different energies were used in the optical model description of the elastic 12C+12C scattering at the energies around and below the Coulomb barrier, as well as in the barrier penetration model to estimate the fusion cross section and astrophysical S factor of the 12C+12C reactions at the low energies. The obtained results are in good agreement with experimental data over a wide range of energies.

10p thuyliebe 09-10-2018 20 0   Download

the study of nuclear reactions parallels the familiar study of chemical reactions. most of the root ideas of chemistry are fundamental for the nuclear physicist.

603p tranthanhkhang93 24-04-2017 88 6   Download