Results 11 to 20 of about 24,771 (208)

Influence of the neutron transport tube on neutron resonance densitometry [PDF]

open access: yesEPJ Web of Conferences, 2017
Neutron Resonance Densitometry (NRD) is a non-destructive assay technique of nuclear materials in particle-like debris that contains various materials.
Kitatani Fumito   +5 more
doaj   +3 more sources

Variational nodal methods for neutron transport: 40 years in review

open access: yesNuclear Engineering and Technology, 2022
The variational nodal method for solving the neutron transport equation has evolved over 40 years. Based on a functional form of the Boltzmann neutron transport equation, the method now comprises a complete set of variants that can be employed for ...
Tengfei Zhang, Zhipeng Li
doaj   +3 more sources

NCrystal: A library for thermal neutron transport

open access: yesComputer Physics Communications, 2020
An open source software package for modelling thermal neutron transport is presented. The code facilitates Monte Carlo-based transport simulations and focuses in the initial release on interactions in both mosaic single crystals as well as polycrystalline materials and powders.
Xiao-Xiao Cai, Thomas Kittelmann
openaire   +3 more sources

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.
Harris, Steven Patrick
openaire   +5 more sources

Reaction Rates and Transport in Neutron Stars [PDF]

open access: yes, 2018
Understanding signals from neutron stars requires knowledge about the transport inside the star. We review the transport properties and the underlying reaction rates of dense hadronic and quark matter in the crust and the core of neutron stars and point out open problems and future directions.
Schmitt, Andreas, Shternin, Peter
openaire   +4 more sources

Bulk Density Response and Experimental Study of Pulsed Neutron-Gamma Density Logging

open access: yesFrontiers 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
doaj   +1 more source

A Preliminary Neutron Imaging Study of Moisture Transport in Cement-Based Materials on PKUNIFTY (A Compact Accelerator Based Neutron Imaging Facility at Peking University)

open access: yesApplied Sciences, 2022
Understanding moisture transport is an important step in the study of the durability of cement-based materials. A neutron imaging detection method for water transport in cement-based materials, based on a compact neutron source is provided.
Dongyang Wang   +8 more
doaj   +1 more source

Collisions of Nucleons with Atoms: Calculated Cross Sections and Monte Carlo Simulation

open access: yesFrontiers in Physics, 2021
After a summary description of the theory of elastic collisions of nucleons with atoms, we present the calculation of a generic database of differential and integrated cross sections for the simulation of multiple elastic collisions of protons and ...
Francesc Salvat, José Manuel Quesada
doaj   +1 more source

Neutron Stars—Cooling and Transport [PDF]

open access: yesSpace Science Reviews, 2015
Observations of thermal radiation from neutron stars can potentially provide information about the states of supranuclear matter in the interiors of these stars with the aid of the theory of neutron-star thermal evolution. We review the basics of this theory for isolated neutron stars with strong magnetic fields, including most relevant thermodynamic ...
Alexander Y. Potekhin   +2 more
openaire   +3 more sources

ANALYSIS OF TIME-EIGENVALUE AND EIGENFUNCTIONS IN THE CROCUS BENCHMARK [PDF]

open access: yesEPJ Web of Conferences, 2021
Time-dependent neutron transport in non-critical state can be expressed by the natural mode equation. In order to estimate the dominant eigenvalue and eigenfunction of the natural mode, CEA had extended the α-k method and developed the generalized ...
Nauchi Yasushi   +2 more
doaj   +1 more source

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