Contacts
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Instrument Scientist
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Instrument Scientist
Neutron radiography and computed tomography for applications in additive manufacturing, materials science, geoscience, biology, energy, and transportation.
The CG-1D Neutron Imaging Facility uses a polychromatic neutron beam in the cold range for neutron imaging measurements. Apertures (with different diameters D, pinhole geometry) are used at the entrance of the helium-filled flight tube to allow variations of the figure of merit L/D, where L is the distance between the aperture and the detector where the image is produced. L/D can vary from 400 to 2000. Samples sit on a translation/rotation stage for alignment and tomography purposes. Its maximum field of view is 86 mm x 86 mm. 6LiF/ZnS scintillators varying from 50–200µ are available. Work on CG-1D supports the development of the future VENUS instrument at the Spallation Neutron Source, which will be dedicated to neutron imaging with an emphasis on time-of-flight contrast imaging. More information about VENUS is available here.
Additive Manufacturing
Porosity; internal structure; quantitative comparative analysis of neutron-computed tomography data with engineering drawings
Energy Storage
Ion transport in energy storage materials; three-dimensional mapping of ions in electrodes
Nuclear Materials
Molten salt diffusion at high temperatures, inhomogeneities in nuclear fuel material
Transportation Technologies
Particulate deposition in vehicle parts; two-phase transport in heat pipes; multiphase constrained jet flows; metal casting; reservoir flow, creation, and production
Plant Systems Biology
Partitioning, transport, and fate of carbon fixed by plants; carbon biosequestration; modeling impacts of rising CO2 levels; modified bioenergy feedstock plants; cavitation and gas embolism in plants
Plant-Soil-Groundwater Systems
Transport and interactions of fluids in porous media; water infiltration and aquifer recharge; plant-plant and plant-fungal interactions; change in pore structure and voids after repeated thawing and freezing of permafrost soil
Biological and Forensic Studies
Structural, contrast agent, cancer research, wood and biomass pyrolysis
Food Science and Archeology
Water migration and degradation through time; examination of cultural artifacts
Wavelength | 0.8 < λ < 6 Å |
Highest spatial resolution | CCD: ~ 75 µm (FOV: 8.6 x 8.6 cm2) sCMOS ~ 25 µm (FOV: ~ 3.6 x 2.4 cm2) |
L/D | 400-2000 |
Detector |
CCD and sCMOS; coupled with scintillators (various thickness from 25-200 µm) |
Detector max. frame rate |
CCD: 1 fps 75 fps, 16-bit, rolling shutter 100 fps, 12-bit, rolling shutter |
Instrument Scientist
Instrument Scientist