Results 41 to 50 of about 12,472 (163)

Study of Monte Carlo Simulation Method for Proton Transport in NPTS Program

open access: yesYuanzineng kexue jishu, 2023
Monte Carlo simulation has become an effective method for solving different physical problems, which is especially advantageous in the particle transport problems with complex geometric models.
HAN Lihui;ZHANG Huayang;ZHONG Bin;CHENG Li;SHEN Huayun
doaj  

Verification and Analysis of the Problem-Dependent Multigroup Macroscopic Cross-Sections for Shielding Calculations

open access: yesEnergies, 2023
Multigroup constants are the foundation of neutron and photon transport problems, and the accuracy of multigroup cross-sections has a significant impact on shielding calculation.
Xu Zhao   +5 more
doaj   +1 more source

Calculation of eigenvalues for neutron transport equation using Henyey-Greenstein phase function in slab geometry

open access: yesEPJ Web of Conferences, 2016
Eigenvalues are obtained for one-dimensional steady-state neutron transport equation in slab geometry using Henyey-Greenstein (HG) phase function. Firstly, HG phase function is inserted into neutron transport equation then eigenvalues are calculated for ...
Bülbül Ahmet
doaj   +1 more source

Cosmic-ray neutron transport at a forest field site: the sensitivity to various environmental conditions with focus on biomass and canopy interception [PDF]

open access: yesHydrology and Earth System Sciences, 2017
Cosmic-ray neutron intensity is inversely correlated to all hydrogen present in the upper decimeters of the subsurface and the first few hectometers of the atmosphere above the ground surface.
M. Andreasen   +5 more
doaj   +1 more source

Research on Data-Driven Methods for Solving High-Dimensional Neutron Transport Equations

open access: yesEnergies
With the continuous development of computer technology, artificial intelligence has been widely applied across various industries. To address the issues of high computational cost and inefficiency in traditional numerical methods, this paper proposes a ...
Zhiqiang Peng   +6 more
doaj   +1 more source

Structural Aspects of Neutron Survival Probabilities

open access: yesJournal of Nuclear Engineering
The neutron survival probability (and related quantities including probabilities of extinction and initiation) is a central element of the broader stochastic theory of neutron populations and finds application in fields including reactor start-up ...
Scott D. Ramsey
doaj   +1 more source

Transport in neutron star mergers

open access: yes, 2020
After an introduction to the QCD phase diagram, the nuclear equations of state, and neutron star mergers, I discuss three projects related to transport and nuclear matter in neutron star mergers. The first is the nature of beta equilibrium in the portion of a merger that is transparent to neutrinos.
openaire   +3 more sources

PARTIAL NEUTRON TRANSPORT EQUATIONS

open access: yesPROBLEMS OF ATOMIC SCIENCE AND TECHNOLOGY. SERIES: NUCLEAR AND REACTOR CONSTANTS, 2019
To analyze the spatial kinetics of the reactor, a system of equations for the spatial kinetics of the reactor, consisting of two equations, is usually used. One of them describes the behavior of the neutron flux density, and the second describes the behavior of the precursors of delayed neutrons.
I Chernova, V Bereznev, E Seleznev
openaire   +1 more source

Effects of ground movements on realistic guide models for the European Spallation Source

open access: yesPhysical Review Accelerators and Beams, 2020
We model the effect of ground movement, based on empirical experience, on the transport properties of long neutron guides by ray-tracing simulations. For a simple model, our results reproduce the large losses found by an earlier study, while for a more ...
Asla Husgard   +6 more
doaj   +1 more source

Neutron transport calculation for the BEAVRS core based on the LSTM neural network. [PDF]

open access: yesSci Rep, 2023
Ren C   +10 more
europepmc   +1 more source

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