Sep, 2026
ORNL Report
Publications
Sep, 2026
Conference Paper
Fast Hyperspectral Reconstruction for Neutron Computed Tomography Using Subspace Extraction
Hyperspectral neutron computed tomography enables 3D non-destructive imaging of the spectral characteristics of materials. In traditional hyperspectral reconstruction, the data for each neutron wavelength bin is reconstructed separately. This per-bin reconstruction is extremely time-consuming due to the typically large number of wavelength bins. Furthermore, these reconstr…
Sep, 2026
ORNL Report
Wide Area Environmental Sampling Tabletop Exercise #5 (TTX #5) Technical Report
Sep, 2026
Journal
Evolution of electrochemical redox activity and capacity in vanadium-enriched solid-solution MXene-derived oxides for Li-ion batteries
Solid-solution MXenes emerged as promising precursors for the synthesis of bilayered vanadium oxides (BVOs), offering the ability to introduce multiple transition metals and tune electrochemical properties. However, limited understanding of transition metal site incorporation in the resulting oxides has hindered reliable design. Here, we report the transformation of vanadi…
Sep, 2026
Conference Paper
Adiabatic Quantum Linear Optimal Control for Discrete Time Dynamical Systems
This paper presents a novel approach for solving finite-horizon linear optimal control based on block-Toeplitz least-squares problem, by recasting the latter as Quadratic Unconstrained Binary Optimization (QUBO) suitable for adiabatic quantum computing (AQC). Classical block-Toeplitz leastsquares problem, scales as O((Nm)3) for horizon length N and control dimension m. We…
Sep, 2026
ORNL Report
Production and Characterization of Attribute Values for a 9% U-235 Uranium Hexafluorid
Sep, 2026
Journal
Review and analysis of the high-burnup fuel fragmentation and dispersal data: Comparing LOCA test programs
A significant amount of data have been collected on high-burnup fuel fragmentation and dispersal; however, the data from various programs have been analyzed using different approaches. These approaches have led to differing observations, which regulators worldwide may interpret as uncertainties, and therefore, the regulators have to incorporate this uncertain transposabili…
Sep, 2026
Conference Paper
From Commissioning to Precision Data-Taking: Resolving Operational Challenges in the Nab Detector Systems
Our understanding of the weak mixing of quarks, described by the Cabibbo-Kobayashi-Maskawa (CKM) matrix, currently presents an anomaly. Thanks to major strides in both theory and experiment, improved precision in determinations of the first row of matrix elements has revealed disagreement with the expectation of unitarity. The Nab experiment at the Spallation Neutron Sourc…
Sep, 2026
Journal
Rapid synthesis of dual-element isotope-enriched 𝛼−MoO3 crystals by reactive vapor transport
In this work, we develop a rapid reactive vapor transport technique to efficiently utilize limited isotopically pure precursors, particularly gaseous 18O2, and synthesize mm-scale, high-quality isotope-enriched crystals within few-minute growth durations. We unlock this capability by using metallic molybdenum precursors with high source temperatures (900∘C) and total pres…