Results 111 to 120 of about 6,219 (301)

Analytical derivation of steady-state delayed neutron precursor distribution and effective delayed neutron fraction in a molten salt reactor

Nuclear Engineering and Technology
In liquid-fueled molten salt reactors (MSRs), the nuclear fuel is dissolved in a molten salt mixture that circulates through the primary loop. For system-scale simulations of MSRs, a point kinetics model (PKM) is commonly employed to describe the core ...
Jae Jun Jeong, Yun Je Cho
doaj   +1 more source

Singular Perturbation Solutions of the Neutron Transport Equation.

, 1982
In this research the singular perturbation technique is used to solve the one-dimensional neutron transport equation with isotropic neutron scattering. We demonstrate through both analytic and numerical solutions that the singular perturbation provides a
Losey, David Charles
core  

Halide Perovskite: A Rich Source of Thermal Insulator

Advanced Science, EarlyView.
Halide perovskites exhibit ultralow thermal conductivity driven by intrinsic lattice softness and strong anharmonicity, falling below conventional defect‐engineering limits. Weak metavalent bonding, A‐site rattling, and dynamic octahedral tilting drive phonon scattering to the Ioffe–Regel limit, where wave‐like tunneling replaces particle‐like ...
Haolin Ye, Bangzhi Ge, Yuan Yu, Chongjian Zhou   +3 more
wiley   +1 more source

Collective features of nuclear dynamics with exotic nuclei within microscopic transport models

EPJ Web of Conferences, 2014
We employ a transport model based on Landau-Vlasov equation to explore the dipolar response of neutron rich systems and its dependence on the symmetry energy.
Baran Virgil, Colonna Maria, Di Toro Massimo, Croitoru Andreea, Dumitru Daniel   +4 more
doaj   +1 more source

Atomically Modulating Competing Exchange Interactions in Centrosymmetric Skyrmion Hosts GdRu2X2 (X = Si and Ge)

Advanced Electronic Materials, EarlyView.
Our work bridges the gap between skyrmion discovery and material design by demonstrating how atomic‐scale control of exchange interactions enables tunable skyrmion phase transitions in centrosymmetric magnetic metals. ABSTRACT Magnetic skyrmions are topologically protected spin states that hold promise for shaping the future of electronics.
Dasuni N. Rathnaweera, Xudong Huai, K. Ramesh Kumar, Michał J. Winiarski, Tomasz Klimczuk, Allana G. Iwanicki, Satya K. Kushwaha, Martin Mourigal, Tyrel M. McQueen, Thao T. Tran   +9 more
wiley   +1 more source

Optimize Before You Synthesize—Enhancing the Ionic Conductivity of Li7SiPS8 Using Bayesian Optimization

Angewandte Chemie, EarlyView.
Bayesian optimization was used to optimize the synthesis parameters of the solid electrolyte Li7SiPS8$\mathrm {Li}_7\mathrm {SiPS}_8$ in order to increase the ionic conductivity. After only 32 iterations, the ionic conductivity was successfully increased from 2 to 7 mS cm−1$\mathrm {cm}^{-1}$ at 25∘C$^\circ\mathrm {C}$, while synthesis temperature and ...
Lucas G. Balzat, Robert Calaminus, Yinghan Zhao, Kristina Gjorgjevikj, Igor Moudrakovski, Simon Krause, Arnd Koeppe, Britta Nestler, Bettina V. Lotsch   +8 more
wiley   +2 more sources

Neutron transport equation numerical algorithm: A discrete ordinate method based multi-group neutron transport code for criticality and shielding analysis

Radiation Protection and Environment
This paper presents a deterministic neutron transport model developed for analyzing nuclear reactor criticality and shielding problems in the three-dimensional Cartesian geometry.
Kondala Rao Rupa, A. Jasmin Sudha
doaj   +1 more source

Study on Deterministic Calculation Method for Electron Transport Process

Yuanzineng kexue jishu, 2023
Electron transport process is a crucial factor in the formulation of the electronic current in nuclear detectors. Accurate calculation of electron transport process is the essential function for advanced nuclear detector design and analysis software ...
LI Xiaoying;LI Yunzhao;SHAO Ruizhi;XU Ning
doaj  

Fabrication of Composite Cathode for All‐Solid‐State Sodium Batteries

Advanced Energy Materials, EarlyView.
The design of composite cathodes for all‐solid‐state sodium batteries must address three critical challenges—interfacial side reactions, interfacial delamination, and highly tortuous transport pathways. This work outlines structural and interfacial strategies to optimize ion transport and mechanical stability, enabling durable, and high‐performance ...
Gaoming Sun, Yuan Ma, Hehe Zhang, Shengan Wu, Shiyong Chu, Stefano Passerini, Yanjiao Ma   +6 more
wiley   +1 more source

Tuning the Mechanical Properties of Crosslinked Copolymers via Sequence and Solvent‐Selective Swelling for Vat Photopolymerization

Angewandte Chemie, EarlyView.
Polymer sequence and solvent selectivity independently modulate pendant‐vinyl accessibility during photocuring, trapping different topologies in CLIP and controlling mechanical properties. ABSTRACT Block copolymers (BCPs) offer distinct advantages for vat photopolymerization by enabling mechanically programmable network structures through microphase ...
Chia‐Min Hsieh, Krista G. Schoonover, Naushad Ahmed, Jung‐Bin Ahn, Shuo Qian, Michael J. A. Hore, Weiling Xia, Kaiwen Hsiao, Yue Yuan, Mani Sengoden, Donald J. Darensbourg, Emily Pentzer, Peiran Wei   +12 more
wiley   +2 more sources