Science Highlights | U.S. DOE Office of Science (SC)

(Left) Measured and simulated electron temperature curves during an NBI pulse showing the outcome of the competing effects between neutral particle-derived fast ions and cold electrons. (Right) One of DIII-D’s four neutral beams.

For Heating Plasma in Fusion Devices, Researchers Unravel How Electrons Respond to Neutral Beam Injection

Study finds that neutral beam performance can be experimentally deduced from electron temperature evolution during neutral beam injection.

Contour plot of electron temperature (left) and radial profiles of electron temperature (center) and ion temperature (right) across an island, with ion temperature showing a gradient observed experimen-tally (blue) and reproduced in simulations (red).

In a Fusion Device Plasma, a Steep Ion Temperature Gradient Slows the Growth of Magnetic Islands

The first measurement of ion temperature in magnetic islands identified a steep gradient, providing insights for improving plasma confinement in tokamaks.

A gas-phase X-Ray scattering experiment captures cyclopentadiene rapidly transforming into the strained bicyclo[2.1.0]pentene. This structure change is triggered by a pump pulse (blue) and detected through X-ray scattering (yellow).

Carbon Rings Under Stress

Ultrafast X-ray experiments provide direct evidence that interaction of light with a hydrocarbon molecule produces strained molecular rings.

Researchers Use Vitamins to Decode Complex Interactions in the Soil Microbiome

Nutrients related to vitamin B12 influence microbial growth and reshape soil microbiomes.

A metallic line atop a medium biased at the edge of chaos can provide effective negative resistance for time-varying signals, outputting a larger signal compared to its input. The energy for amplification comes from the static bias applied to the medium.

The “Edge of Chaos” Amplifies Signals Without Transistors

Emulating the edge of chaos of axons enables a metal wire to overcome its resistance without cooling, thereby amplifying signals flowing inside of it.

3D-printed metal samples are about 4 inches wide. Printed and heat-treated samples are mounted on a pedestal and exposed to a neutron beam to analyze residual stresses, or irregularities such as cracks or voids, created during the manufacturing process.

Neutrons Help Improve 3D-Printed Superalloys for Applications in Extreme Environments

Neutron experiments revealed microscopic details about a special 3D-printed superalloy that could potentially reduce component costs.

Microtomographic 3D snapshots of complex structure of thermal cracks and air bubbles in an additive manufactured metal during the 3D printing process.

3D Printing One of the Strongest Stainless Steels

In a breakthrough for industrial manufacturing, scientists reproduced one of the world’s toughest materials using 3D printing.

Artist’s representation of camelina seeds with contrasting seed coat colors and oil amounts. Disruption of the TT8 gene in camelina changed the regular brown seed color to light yellow and enhanced oil accumulation.

Engineered Yellow-Seeded Camelina Packs More Oil

Scientists use gene editing to create a yellow-seeded camelina that may boost oil yield.

Visualization of Bragg diffraction peaks in an undeformed bi-crystal gold sample. The height denotes photon counts. This data was produced at the Advanced Photon Source and processed at the ThetaGPU supercomputer using AI models.

Bringing FAIR Principles to AI Models

Researchers extend findable, accessible, interoperable, and reusable principles for datasets to scientific datasets and software.

Researchers have long thought pure niobium superconducting radiofrequency cavities were best for particle accelerators. Researchers are now using a toolkit to learn how to add impurities to the cavities to make them smoother—and more efficient.

Smoother Surfaces Make for Better Particle Accelerators

An enhanced topographic analysis toolkit for forecasting and improving particle accelerator performance is helping scientists build better accelerators.

Smoother Surfaces Make for Better Particle Accelerators

An enhanced topographic analysis toolkit for forecasting and improving particle accelerator performance is helping scientists build better accelerators.

Wavefunction matching replaces the short distance part of the two-body wavefunction for a realistic interaction with that of a simple easily computable interaction. The result is a new interaction that can be handled in quantum many-body calculations.

Making Difficult Quantum Many-Body Calculations Possible

Solving quantum many-body problems with wavefunction matching.