Results 11 to 20 of about 19,203 (311)

Diffusion bonded Be neutron target using 8MeV proton beam [PDF]

EPJ Web of Conferences, 2020
The development of the high intensity compact neutron source is mainly conducted by using accelerators for medical purposes. Recently, a lot of compact neutron sources have been developed, and most of them are for boron neutron capture therapy (BNCT ...
Kurihara Toshikazu, Kobayashi Hitoshi
doaj   +2 more sources

Unstructured Grids and the Multigroup Neutron Diffusion Equation [PDF]

Science and Technology of Nuclear Installations, 2013
The neutron diffusion equation is often used to perform core-level neutronic calculations. It consists of a set of second-order partial differential equations over the spatial coordinates that are, both in the academia and in the industry, usually solved
German Theler
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Proton Dynamics in Palladium–Silver: An Inelastic Neutron Scattering Investigation

Molecules, 2020
Proton dynamics in Pd77Ag23 membranes is investigated by means of various neutron spectroscopic techniques, namely Quasi Elastic Neutron Scattering, Incoherent Inelastic Neutron Scattering, Neutron Transmission, and Deep Inelastic Neutron Scattering ...
Daniele Colognesi, Franz Demmel, Alessandra Filabozzi, Antonino Pietropaolo, Alfonso Pozio, Giovanni Romanelli, Alessia Santucci, Silvano Tosti   +7 more
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Localizing Perturbations in Pressurized Water Reactors Using One-Dimensional Deep Convolutional Neural Networks

Sensors, 2021
This work outlines an approach for localizing anomalies in nuclear reactor cores during their steady state operation, employing deep, one-dimensional, convolutional neural networks.
Laurent Pantera, Petr Stulík, Antoni Vidal-Ferràndiz, Amanda Carreño, Damián Ginestar, George Ioannou, Thanos Tasakos, Georgios Alexandridis, Andreas Stafylopatis   +8 more
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Diffusion in membranes: Toward a two-dimensional diffusion map

EPJ Web of Conferences, 2015
For decades, quasi-elastic neutron scattering has been the prime tool for studying molecular diffusion in membranes over relevant nanometer distances. These experiments are essential to our current understanding of molecular dynamics of lipids, proteins ...
Toppozini Laura, Garcia-Sakai Victoria, Bewley Robert, Dalgliesh Robert, Perring Toby, Rheinstädter Maikel C.   +5 more
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Response Surface Methodology Control Rod Position Optimization of a Pressurized Water Reactor Core Considering Both High Safety and Low Energy Dissipation

Entropy, 2017
Response Surface Methodology (RSM) is introduced to optimize the control rod positions in a pressurized water reactor (PWR) core. The widely used 3D-IAEA benchmark problem is selected as the typical PWR core and the neutron flux field is solved. Besides,
Yi-Ning Zhang, Hao-Chun Zhang, Hai-Yan Yu, Chao Ma   +3 more
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Analytical solution of the multigroup neutron diffusion equation coupled with an iterative method

Brazilian Journal of Radiation Sciences, 2022
Many numerical methods are being used to solve the multigroup neutron diffusion equation for different types of nuclear reactors. These methods solve this equation quite accurately and determine the neutron flux and power distribution in the reactor as ...
Adilson Costa da Silva, Aquilino Martinez, Rodrigo Diniz, Alessandro Gonçalves   +3 more
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Advantage of a dynamical (B/Gd) neutron beam cancer therapy over a stationary therapy

Ядерна фізика та енергетика, 2020
This communication reports on a demonstration that a dynamical neutron beam is superior, in penetrating the surface of a (B/Gd)-loaded cancerous region, to a stationary neutron beam of the same intensity.
Nassar H. S. Haidar
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A solution for the neutron diffusion equation in the spherical and hemispherical reactors using the residual power series

Frontiers in Physics, 2023
A novel analytical solution to the neutron diffusion equation is proposed in this study using the residual power series approach for both spherical and hemispherical fissile material reactors.
Ahmad El-Ajou, Mohammed Shqair, Ibrahim Ghabar, Aliaa Burqan, Rania Saadeh   +4 more
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Analytical Solution for Multi-Energy Groups of Neutron Diffusion Equations by a Residual Power Series Method

Mathematics, 2019
In this paper, a multi-energy groups of a neutron diffusion equations system is analytically solved by a residual power series method. The solution is generalized to consider three different geometries: slab, cylinder and sphere.
Mohammed Shqair, Ahmad El-Ajou, Mazen Nairat   +2 more
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