Results 51 to 60 of about 80,385 (278)

Quantifying Spin Defect Density in hBN via Raman and Photoluminescence Analysis

Advanced Functional Materials, EarlyView.
An all‐optical method is presented for quantifying the density of boron vacancy spin defects in hexagonal boron nitride (hBN). By correlating Raman and photoluminescence signals with irradiation fluence, defect‐induced Raman modes are identified and established an relationship linking optical signatures to absolute defect densities. This enables direct
Atanu Patra, Paul Konrad, Andreas Sperlich, Timur Biktagirov, Wolf Gero Schmidt, Lesley Spencer, Igor Aharonovich, Sven Höfling, Vladimir Dyakonov   +8 more
wiley   +1 more source

A numerical validation between the neutron transport and diffusion theories for a spatial kinetics problem

Brazilian Journal of Radiation Sciences
In this paper, a comparative analysis of numerical results of the neutron transport and diffusion theories for steady-state and transient multigroup problems is presented.
Rodrigo Zanette, Liliane Basso Barichello, Claudio Zen Petersen   +2 more
doaj   +1 more source

Thermalisation time and specific heat of neutron stars crust

, 2009
We discuss the thermalisation process of the neutron stars crust described by solving the heat transport equation with a microscopic input for the specific heat of baryonic matter.
A. Y. Potekhin, Dany Page, F. Grill, J. Margueron, K. P. Levenfish, L. D. Landau, M. Fortin, N. Sandulescu, U. Lombardo   +8 more
core   +3 more sources

Asymptotic analysis of unsteady neutron transport equation

Mathematical Methods in the Applied Sciences, 2019
Consider the unsteady neutron transport equation with diffusive boundary condition in 2D convex domains. We establish the diffusive limit with both initial layer and boundary layer corrections. The major difficulty is the lack of regularity in the boundary layer with geometric correction.
openaire   +3 more sources

Mesoporous Carbon Thin Films with Large Mesopores as Model Material for Electrochemical Applications

Advanced Functional Materials, EarlyView.
Mesoporous carbon thin films possessing 70 nm mesopores are prepared on titanium substrates by soft templating of resol resins with a self‐synthesized poly(ethylene oxide)‐block‐poly(hexyl acrylate) block copolymer. A strategy to avoid corrosion of the metal substrate is presented, and the films are extensively characterized in terms of morphology ...
Lysander Q. Wagner, Joshua Schober, Pascal Dippell, Chantal Glatthaar, Smail Mekhilef, David Schäfer, Hannes Hergert, Marcus Rohnke, Matthias T. Elm, Bernd M. Smarsly   +9 more
wiley   +1 more source

Diffusion Approximation to Neutron Transport Equation with First Kind of Chebyshev Polynomials

Süleyman Demirel Üniversitesi Fen-Edebiyat Fakültesi Fen Dergisi, 2015
: The first kind of Chebyshev polynomials are used for the series expansion of the neutron angular flux in neutron transport theory. The first order approximation known as the diffusion approximation is applied to one-dimensional neutron transport ...
Ökkeş EGE, Hakan ÖZTÜRK, Ahmet BÜLBÜL   +2 more
doaj  

Diffusion synthetic acceleration with the fine mesh rebalance of the subcell balance method with tetrahedral meshes for SN transport calculations

Nuclear Engineering and Technology, 2020
A diffusion synthetic acceleration (DSA) technique for the SN transport equation discretized with the linear discontinuous expansion method with subcell balance (LDEM-SCB) on unstructured tetrahedral meshes is presented.
Habib Muhammad, Ser Gi Hong
doaj   +1 more source

Case’s Method for Anlı-Güngör Scattering Formula

Süleyman Demirel Üniversitesi Fen-Edebiyat Fakültesi Fen Dergisi, 2022
Case method is a powerful method in solving one-speed neutron transport equation. The method can be applied to one-speed neutron transport problems and pseudo- geometry problems.
R. Gökhan Türeci, Ahmet Bülbül
doaj   +1 more source

Well-balanced and asymptotic preserving schemes for kinetic models [PDF]

, 2016
In this paper, we propose a general framework for designing numerical schemes that have both well-balanced (WB) and asymptotic preserving (AP) properties, for various kinds of kinetic models.
Emako, Casimir, Tang, Min
core   +4 more sources

Effects of momentum-dependent symmetry potential on heavy-ion collisions induced by neutron-rich nuclei

, 2004
Using an isospin- and momentum-dependent transport model we study effects of the momentum-dependent symmetry potential on heavy-ion collisions induced by neutron-rich nuclei.
Bao-An Li, Baran, Baran, Bertsch, Bethe, Blaettel, Bombaci, Brown, Champak B. Das, Charles Gale, Chen, Chen, Chen, Chen, Csernai, Danielewicz, Danielewicz, Danielewicz, Das, Gale, Gale, Greco, Hodgson, Koch, Koch, Lattimer, Li, Li, Li, Li, Li, Li, Li, Mishra, Müller, Pan, Prakash, Rizzo, Scalone, Subal Das Gupta, Tan, Tsang, Tsang, Welke, Wiringa, Wiringa, Zhang   +46 more
core   +1 more source