A5026006125- Nuclear Physics and Applications
- Nuclear reactor physics and engineering
- Radiation Detection and Scintillator Technologies
- Radioactive contamination and transfer
- Nuclear Materials and Properties
- Radioactive element chemistry and processing
- Nuclear physics research studies
- Graphite, nuclear technology, radiation studies
- Radioactivity and Radon Measurements
- Radiation Therapy and Dosimetry
- Neutrino Physics Research
- Luminescence Properties of Advanced Materials
- Heavy Metals in Plants
- Analytical chemistry methods development
- Particle physics theoretical and experimental studies
- Atomic and Subatomic Physics Research
- Particle Detector Development and Performance
- Magnetic confinement fusion research
- Radioactive Decay and Measurement Techniques
- Gas Sensing Nanomaterials and Sensors
- Plant Micronutrient Interactions and Effects
- Planetary Science and Exploration
- Chemical Synthesis and Characterization
- Electrohydrodynamics and Fluid Dynamics
- Plant responses to water stress
Oak Ridge National Laboratory
2013-2024
Oak Ridge Associated Universities
2021
Clariant (Switzerland)
2013
Tennessee Technological University
1990
We used a novel radiochemical technique to search for the decay of 3.5-eV level ${(}^{229}{\mathrm{Th}}^{m})\mathrm{in}{}^{229}\mathrm{Th}$ ground state ${(}^{229}{\mathrm{Th}}^{g})$ by separating ``fresh'' ${}^{229}\mathrm{Th}$ from approximately 25 g ${}^{233}\mathrm{U}.$ then measured its \ensuremath{\gamma}-ray as function time seeking evidence ${}^{229}{\mathrm{Th}}^{g}$ growth ${}^{229}{\mathrm{Th}}^{m}$ isomeric decay. No such was observed. From this experiment we have concluded that...
Rapid nondestructive assay methods for trace fissile material analysis are needed in both nuclear forensics and safeguards communities. To address these needs, research at the Oak Ridge National Laboratory High Flux Isotope Reactor Neutron Activation Analysis facility has developed a generalized method to characterize materials containing isotopes. This relies on gamma-ray emissions from short-lived fission products makes use of differences product yields identify compositions samples....
Heterogeneous NO2-mediated oxidation of uranium, also known as advanced voloxidation, is a proposed head-end reprocessing method for used nuclear fuel. An advantage voloxidation the removal volatile fission products, which complicate downstream separation and containment challenges leading to increased processing economics. Iodine, one species interest, has exhibited varied results in this process. Using CsI surrogate material, work mimics effect NO2-based on iodine sheds light factors that...
Abstract Batch corrosion inhibition has been a technique used for many decades. Often, non-structured philosophy is taken to treat downhole production tubing and pipelines using batch treatment. This results in non-optimal chemistries application parameters being employed, resulting dubious protection provided as part of an integrity management strategy. Many the challenges come down different types evaluation techniques laboratory inhibitors. Furthermore, accurate modeling inhibitor not...
AbstractA series of experiments on a mercury spallation target using high-peak-power GeV proton-beam from the Alternating Gradient Synchrotron (AGS) Brookhaven National Laboratory (BNL) has been performed under an international collaboration among laboratories in Japan, U.S. and Europe, namely ASTE (AGS Spallation Target Experiment) collaboration. This paper reviews current status neutronic performance target.Keywords: Mercury targetGeV proton-beamAlternating SynchrotronNeutron spatial...
A neutronic benchmark experiment on a simulated spallation neutron target assembly was conducted by using the Alternating Gradient Synchrotron at Brookhaven National Laboratory and analyzed to investigate prediction capability of Monte Carlo simulation codes used in designs sources. The consisting mercury target, light water moderator, lead reflector bombarded 1.94-, 12-, 24-GeV protons, fast flux distributions around spectra thermal neutrons leaking from moderator were measured experiment....
The current interest in returning to the Moon and Mars by 2030 makes cost effective low mass health monitoring sensors essential for spacecraft development. In space, there are many surface measurements that required monitor condition of including: temperature, radiation dose, impact. Through use phosphors, these conditions can be monitored. Practical space-based phosphor will depend heavily upon research investigating resistance phosphors ionizing ability anneal or self-heal from damage...
<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> The current interest in returning human exploration to the Moon and Mars makes cost-effective low-mass health monitoring sensors essential for spacecraft development. In space, there are many surface measurements that required monitor condition of including: temperature, radiation dose, impact. Through use tailored phosphors, these conditions can be monitored. Practical space-based phosphor will...
Abstract The extraction of Th(IV), UO2(II), Am(III), and Eu(III) from aqueous acid by a tetradentate extractant, 4,4′-nonanedioyl-bis(2,4-dihydro-5-methyl-2-phenyl-3H-pyrazol-3-one), H2NDBP, has been studied compared with two bidentate model compounds, 4-hexanoyl-2,4-dihydro-5-methyl-2-phenyl-3H-pyrazol-3-one, HHMPP, 4-benzoyl-2,4-dihydro-5-methyl-2-phenyl-3H-pyrazol-3-one, HBMPP. distribution coefficients were somewhat larger using H2NDBP relative to the compounds under conditions studied....
Purification of plutonium, uranium, and titanium from high-purity graphite for high precision isotopic analysis <italic>via</italic> MC-ICP-MS.
Abstract The ionome represents elemental composition in plant tissues and can be an indicator of nutrient status as well overall performance. Thus, identifying genetic determinants governing uptake storage is important goal breeding engineering. In this study, we coupled high-throughput characterization with high-resolution genome-wide association studies (GWAS) to uncover loci that modulate ionomic leaves 584 black cottonwood poplar ( Populus trichocarpa ) genotypes. Congruence alternate...
The ionome represents elemental composition in plant tissues and can be an indicator of nutrient status as well overall performance. Thus, identifying genetic determinants governing uptake storage is important goal for breeding engineering biomass feedstocks with improved In this study, we coupled high-throughput characterization leaf high-resolution genome-wide association studies (GWAS) to uncover loci that modulate ionomic leaves poplar (