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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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Machine-Learned Interatomic Potential Development for W-ZrC for Nuclear Fusion.
Abstract not provided.
Machine Learned Interatomic Potential Development of W-ZrC for Fusion Divertor Microstructure and Thermomechanical Properties .
Abstract not provided.
W+D Charm Jet Fragmentation
Using ATLAS Run 2 data, proton-proton collisions at 13 TeV center of mass energy are analyzed to measure the properties of Charmed particle fragmentation. The process $pp\rightarrow &W;\pmc$, where the c-quark fragments to a $D^+$ hadron is used. Since quarks are not directly seen from the collision, a jet of particles containing the charmed hadron is used. This is accomplished by comparing the distribution of $z_T$, the ratio of the transverse momentum of the $D^+$ to that of the track jet containing the hadron, to several Monte Carlo generators.
ACT W-DED Mid-year report
Thus far in FY 23 the Sandia team has made accomplishments on several fronts. A major focus has been completing testing to compare small scale tensile properties found through high throughput tensile (HTT) tests to bulk tensile properties found through standard ASTM E8 test methods. These comparisons have been completed in previously manufactured wire arc additively manufactured (WAAM) Ti-6Al-4V material and electron beam additively manufactured (EBAM) Ti-6Al-4V material in the as built and heat-treated conditions. Figure 1 shows the distribution of both HTT and E8 test results indicating the distributions are not significantly different. This result gives confidence that HTT coupon geometries can be utilized for accelerated process development and optimization moving forward
Machine-learned Interatomic Potential Development for H Trapping in ZrC Strengthened W
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Regulatory Testing of WTP HL W Glasses for Compliance with Delisting Requirements, VSL-03R3780-1, Rev. 1
(Part of the data collected for this work and discussed in this report was subject to data quality and bias issues. All the affected tests have subsequently been repeated, as directed by the Waste Treatment Plant Project, and new statistical analyses have been performed on the revised data set. A subsequently-issued report supercedes this report and describes the revised data, together with the revised composition-property models (Kot et al. 2004). The reader should refer to the new report for discussion of the revised data set and composition-property (TCLP cadmium release) models. None of the data for the spike glasses, designed for Case 1 and Case 2 COPCs testing, were affected by this issue.)
Custom Post-Process Heat Treatments to Eliminate Columnar Microstructure in W-DED Ti-6Al-4V
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Gleeble Dilatometry to Resolve Microstructure Evolution in W-DED Ti-6Al-4V
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Assessment of 180,182, 183,184,186 W Photonuclear Data
When electron beams from accelerators are stopped in thick targets made of materials with a high atomic number (or high-Z targets), they produce photons through braking radiation (commonly known as bremsstrahlung). The efficiency of photon production increases with the atomic number (Z). Tungsten is commonly chosen as a bremsstrahlung converter in both research and medical linear accelerators due to its high Z, large bremsstrahlung cross section, high melting point, and excellent thermal conductivity.
Mechanical Behavior of Neutron Irradiated Ta-W Alloys
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A Machine Learned Potential for H Behavior in Dispersion- Strengthened W
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Electron microscopic characterization of W-doped nanocrystalline diamond
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Additive Manufacturing of Ta-W Alloys: A Gradient Approach to Microstructure and Cracking Behavior
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MONet/1000 Soils metagenome pathway modelling narrative w/ auto batch import
This narrative performs metabolic modeling and flux balance analysis (FBA) using metagenome-assembled genomes (MAGs) from the 1000 Soils samples, as described by Song et al. (2026, accepted). The set of MAGs (in FASTA format) is converted into a set of assembly objects compatible with functional annotation via RASTtk, yielding a set of genome objects that undergo metabolic modeling via OMEGGA. These genome objects are then used to conduct FBA, generating tables of metabolite uptake rates across the MAGs under investigation.
Herbig–Haro Outflows in Circinus W
We report the discovery of new Herbig–Haro (HH) outflows in the Western Circinus molecular cloud. They were found using a color-composite imaging method that reveals faint Hα emission in complex environments. Follow-up observations in [S ii] confirmed their classification as HH objects. Nearly half of the newly discovered objects are part of the HH 76 outflow and are associated with a likely young stellar object (YSO) candidate. We also identify the source of a second outflow. Three newly discovered objects are part of a third outflow whose origin is unknown. Four more HH objects are also discovered, each of which has a location and morphology that does not suggest an origin. In total there must be at least five YSOs in the field currently producing outflows. The discovery of new HH objects and associated driving sources in this cloud complex provides more evidence for active star formation and a relatively young age in this seldom-studied region.