Results 81 to 90 of about 3,755,444 (214)

Elliptical neutron‐focusing supermirrors with Ni–P‐plated Al–Si alloy substrates for multi‐incident‐angle neutron reflectometry

open access: yesJournal of Applied Crystallography, EarlyView.
Multi‐incident‐angle neutron reflectometry is realized using elliptical metallic supermirrors for dual‐beam focusing. This approach presents new opportunities for efficient interface analysis.This study introduces a novel approach for multi‐incident‐angle neutron reflectometry utilizing metallic elliptical supermirrors to enable the simultaneous ...
Yan Wei   +6 more
wiley   +1 more source

Spallation source neutron target systems [PDF]

open access: yes, 1996
This is the final report for a two-year, Laboratory-Directed Research and Development (LDRD) project at the Los Alamos National Laboratory (LANL). The project sought to design a next-generation spallation source neutron target system for the Manuel Lujan,
Russell, G.   +3 more
core   +1 more source

An ultra-tunable platform for molecular engineering of high-performance crystalline porous materials

open access: yesNature Communications, 2016
Synthetic design of crystalline porous materials is important for applications such as catalysis and adsorption. Here, the authors demonstrate a platform for the development of crystalline porous materials with a variety of organic ligands and metallic ...
Quan-Guo Zhai   +7 more
doaj   +1 more source

ORNL Neutron Sciences Annual Report for 2007

open access: yes, 2008
This is the first annual report of the Oak Ridge National Laboratory Neutron Sciences Directorate for calendar year 2007. It describes the neutron science facilities, current developments, and future plans; highlights of the year's activities and ...
Ekkebus, Allen E   +3 more
core   +1 more source

Robust Electrocaloric Performance Enabled by Highly‐Polar Frustrated Nanodomains in NaNbO3‐Based Ferrodistortive Relaxor

open access: yesAdvanced Functional Materials, Volume 36, Issue 77, 24 September 2026.
P4bm framework in NaNbO3‐Ba(Ti, Hf)O3 ferrodistortive relaxor entails short‐range and highly‐polar ferrodistortive orders. The abundant highly‐polar orders facilitate to increase entropy change, and robust octahedral oxygen tilt enables to impede thermal perturbations.
Feng Li   +11 more
wiley   +1 more source

Benchmarking Geant4 for spallation neutron source calculations

open access: yes, 2016
Geant4 is becoming increasingly used for radiation transport simulations of spallation neutron sources and related components. Historically, the code has seen little usage in this field and it is of general interest to investigate the suitability of ...
Dijulio, Douglas D.   +9 more
core   +1 more source

How Proton Incorporation Reshapes Lattice Dynamics In BaSnO3‐Type Proton Conductors

open access: yesAdvanced Science, Volume 13, Issue 50, 7 September 2026.
Yttrium‐doped BaSnO3 exhibits isotope‐dependent changes in its low‐energy vibrational density of states upon hydration. Comparison of dry, H2O‐, and D2O‐treated samples re‐veals mass‐dependent phonon renormalization linked to proton dynamics near oxygen va‐cancies, providing experimental insight into hydrogen‐coupled lattice excitations in proton ...
Artur Braun   +9 more
wiley   +1 more source

Chemically Gradient Ordered Nanodomains Enable Large Tensile Ductility in Gigapascal Lightweight Refractory High‐Entropy Alloys

open access: yesAdvanced Science, Volume 13, Issue 54, 28 September 2026.
A high‐strength lightweight refractory high‐entropy alloy achieves extraordinary ductility owing to the introduction of coherent chemically gradient ordered nanodomains (CGONs). The CGONs not only serve as effective barriers to dislocation motion (strengthening) but also significantly promote dislocation nucleation and multiplication (ductilizing) upon
Wei Zhang   +3 more
wiley   +1 more source

8-inch nano-polycrystalline hBN for neutron radiography

open access: yesPhotoniX
Boron-based scintillators have attracted significant attention due to their high thermal neutron capture cross-section. However, large-area pure boron-based scintillators remain unexplored.
Siqi Zhu   +11 more
doaj   +1 more source

Conceptual design of a comprehensive medium-energy proton experimental platform at CSNS

open access: yesNuclear Engineering and Technology
The China Spallation Neutron Source (CSNS) is upgrading its linear accelerator to 300 MeV, necessitating the design of a new medium-energy associated proton experimental platform (APEP-II).
Yifan Deng   +7 more
doaj   +1 more source

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