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Skin effect in neutron transport theory [PDF]
Physical Review E, 2021 We identify a neutron-flux "skin effect" in the context of neutron transport theory. The skin effect, which emerges as a boundary layer at material interfaces, plays a critical role in a correct description of transport phenomena. A correct accounting of the boundary-layer structure helps bypass computational difficulties reported in the literature ...
E. L. Gaggioli +2 more
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Sobolev Regularity in Neutron Transport Theory [PDF]
ISRN Mathematical Analysis, 2012 The main purpose of this paper is to extend the W1,p regularity results in neutron transport theory, with respect to the Lebesgue measure due to Mokhtar-Kharroubi, (1991), and to abstract measures covering, in particular, the continuous models or multigroup models.
A. Zeghal
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Strong Proton‐Phonon Coupling Drives Fast Ion Transport in Perovskites [PDF]
Advanced ScienceConduction of protons in solids is a cooperative process propelled by phonons, with molecular details obscured by the irregular movements in the thermal bath.
Alexey Rulev +8 more
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ANALYSIS AND COMPARISON OF APOLLO3® AND TRIPOLI-4® NEUTRON NOISE SOLVERS [PDF]
EPJ Web of Conferences, 2021 Neutron noise analysis addresses the description of small time-dependent flux fluctuations in reactor cores, induced by small global or local perturbations of the macroscopic cross sections due to density fluctuations of the coolant, to vibrations of ...
Rouchon Amélie +2 more
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The Application of the Combined Fission Matrix Theory in Fast Reactors
Frontiers in Energy Research, 2021 The combined fission matrix theory is a recently-developed hybrid neutron transport method. It features high efficiency, fidelity, and resolution whole-core transport calculation. The theory is based on the assumption that the fission matrix element ai,j
Donghao He, Tengfei Zhang, Xiaojing Liu
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Conservative neutron transport theory [PDF]
Journal of Mathematical Physics, 1977 A functional analytic development of the Case full-range and half-range expansions for the neutron transport equation for a conservative medium is presented. A technique suggested by Larsen is used to overcome the difficulties presented by the noninvertibility of the transport operator K−1 on its range.
Bowden, Robert L. +2 more
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Bulk Density Response and Experimental Study of Pulsed Neutron-Gamma Density Logging
Frontiers in Earth Science, 2022 The pulsed neutron-gamma density logging technique is used to measure the bulk density of formations based on the detection of gamma rays from the inelastic scattering of neutrons in the formations.
Hu Wang +6 more
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Brazilian Journal of Radiation Sciences, 2021 This work proposes to implement the cell calculation considering the fuel burning using the WIMSD-5B code. The cell calculation procedure allows determining the nuclear parameters present in the multi-group neutron diffusion equation and for this purpose
Desirée Yael de Sena Tavares +2 more
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Nuclear Engineering and Technology, 2020 The telegrapher's theory was used to develop a new formulation for the neutron noise equation. Telegrapher's equation is supposed to demonstrate a more realistic approximation for neutron transport phenomena, especially in comparison to the diffusion ...
Mona Bahrami, Naser Vosoughi
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A ROBUST SECOND-ORDER MULTIPLE BALANCE METHOD FOR TIME-DEPENDENT NEUTRON TRANSPORT SIMULATIONS [PDF]
EPJ Web of Conferences, 2021 A second-order “Time-Dependent Multiple Balance” (TDMB) method for solving neutron transport problems is introduced and investigated. TDMB consists of solving two coupled equations: (i) the original balance equation (the transport equation integrated ...
Variansyah Ilham +2 more
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