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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Report on the LLNL Global Seismic Waveform Tomography Modeling Project
Earth models have important applications for seismic event monitoring including the location and characterization of potential underground nuclear tests. Seismic waves generated by earthquakes and man-made events are altered by variations in Earth’s subsurface properties; and these distortions effect the arrival times of energy packets (phases) and obscure the characteristics of the original energy source (event mechanism). Three-dimensional models of Earth’s seismic properties can help explain and predict the distortions to the seismic wavefield and reveal the properties of a source that generated the waves, including the event location using the model-predicted timing of the phases and source mechanism using the modelpredicted waveform characteristics.
Comparing Neutron and Ion Irradiation by Atom Probe Tomography and In-situ Electron Microscopy [Slides]
Stainless steel TPBAR components undergo neutron radiation-induced segregation and dislocation loop formation. Comparison experiments with ion beams accelerate the damage, and visualize the damage process with in-situ microscopy. In-situ Au irradiation causes defect formation, but no elemental segregation.
Jet tomography of hot and cold nuclear matter [Slides]
Jets are probes of microscopic structures of nuclear matter. With inclusive jets and hadrons, the transport approach is used to determine the QGP jet transport parameter. Much more information contained in k T -dependent observables, require to go beyond qˆ approximation and new tools. Test in-medium jet theory with existing eA data and future EIC.
A Process to Colorize and Assess Visualizations of Noisy X-Ray Computed Tomography Hyperspectral Data of Materials with Similar Spectral Signatures.
Abstract not provided.
A Novel Approach to Map Permeability Using Passive Seismic Emission Tomography
Newly acquired magnetotelluric data and passive seismic data collected with tightly spaced geophone arrays are combined with historic drilling, active seismic, and potential fields data to generate 3-D permeability maps. A cooperative inversion methodology has been developed using active seismic, magnetotelluric, and gravity data in order to produce more robust velocity models for passive seismic data processing without requiring expensive 3-D active seismic surveys. The cooperative inversion estimates velocities from other geophysical data where no prior seismic velocity information is available at two geothermal sites in Nevada: San Emidio and Crescent Valley.
Scintillators: Designing Long Lasting and Efficient Scintillators for LongDuration Muon Tomography
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Report Outlining Computed Tomography Strategy and Microscopy Approach to Qualifying AM 316 Materials
This report is part of work package CR-22OR0406012, Automated, High-Throughput Materials Characterization Techniques , under the Advanced Materials and Manufacturing Technologies program (AMMT). The project’s primary objective is to leverage our AI-based rapid and high-throughput automated characterization framework to qualify additively manufactured 316 materials comprehensively, focusing on optimizing the additive manufacturing process and evaluating the performance of 3D-printed stainless steel components. This report outlines our strategy for leveraging the automated characterization process for qualifying 316H materials.
Informing Mechanical Modeling of Additively Manufactured Al-Si10-Mg Through In Situ Computed Tomography.
Abstract not provided.
Assessing the evolution of pit growth kinetics during atmospheric corrosion using in-situ X-ray tomography.
Abstract not provided.
Out-of-Model Effects and Overdispersion in Gate Set Tomography.
Abstract not provided.
Precise, detailed error budgets for 2-qubit gates from gate set tomography.
Abstract not provided.
Capturing Deformation Mechanisms in Additively Manufactured Parts through High-fidelity Modeling and Computed Tomography.
Abstract not provided.
3D P- and S-Wave Active-Source Seismic Tomography of Rock Valley, Nevada National Security Site.
Abstract not provided.
Lessons Learned in the Development of a Hyperspectral Computed Tomography System.
Abstract not provided.
Insights from X-ray computed tomography into the effects of pit morphology evolution on pit growth.
Abstract not provided.