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Science

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Solar Flares, Boron on Mars, Mapping the Universe, and More in the Space News Source

The latest in space and astronomy in the Space News Source

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Plasma Instability, Carbon Nanotubes, Radiological Crimes, and More in the DOE Science News Source

Click here to go directly to the DOE Science News Source

Science

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Fusion, Plasma, Physics, PPPL , Princeton, ELM, modes, Energy, Tokamak, Instability, Gradient, Current

PPPL Physicist Discovers That Some Plasma Instabilities Can Extinguish Themselves

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PPPL physicist Fatima Ebrahimi has for the first time used advanced models to accurately simulate key characteristics of the cyclic behavior of edge-localized modes, a particular type of plasma instability. The findings could help physicists more fully comprehend the behavior of plasma, the hot, charged gas that fuels fusion reactions in doughnut-shaped fusion facilities called tokamaks, and more reliably produce plasmas for fusion reactions.

Science

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Fusion, fusion and plasma sciences, fusion energy, Fusion Energy Sciences, Nuclear Science, Nuclear, Advanced Scientific Computing Research, Oak Ridge Leadership Computing Facility, Physical Review Letters , Tokamak, tokamaks, tokamak edge, Princeton Plasma Physics Laboratory, PPPL , Princeton University, Princeton, Iter, Plasma, Exascale, plasma turbulence,

Extreme-Scale Code Models Extremely Hot Plasma to Explain Spontaneous Transition

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For the first time, scientists modeled the spontaneous bifurcation of turbulence to high-confinement mode, solving a 35-year-old mystery.

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Fusion Power, Engineering with a Side of Liberal Arts, Nanocrystal Networks for Artificial Intelligence, and More in the Engineering News Source

The latest research and features in the Newswise Engineering News Source

Science

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Fusion, instabilities, Neutral beam injection, plasma physics, National Spherical Torus Experiment-Upgade

Discovered: A Quick and Easy Way to Shut Down Instabilities in Fusion Devices

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Article describes use of second neutral beam injector to suppress instabilities on the NSTX-U

Science

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Fusion, Tokamak, Engineering, Neutral beam injection, Pole shields

PPPL Delivers New Key Components to Help Power a Fusion Energy Experiment

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Article describes PPPL's design and delivery of pole shields for DIII-D neutral beam injectors.

Science

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thruster, thruster design, Hall thrusters, cylindrical Hall thursters, propellant, Plasma, Simulation, Vortex, Yongjie Ding, Boyang Jia, Yu Xu, Liqiu Wei, Hongbo Su, Peng Li, Hezhi Sun, Wuji Peng, Yong Cao, Daren Yu, Harbin Institute of Technology, Physics of Plasmas

New Thruster Design Increases Efficiency for Future Spaceflight

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Hall thrusters are used in earth-orbiting satellites and show promise to propel robotic spacecraft long distances, and the plasma ejected from the exhaust end of the thruster can deliver great speeds. Cylindrically-shaped Hall thrusters lend themselves to miniaturization and have a smaller surface-to-volume ratio that prevents erosion of the thruster channel. Investigators in China have developed a new design for CHTs that significantly increases thrust; they report their work in this week’s Physics of Plasmas.

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Carbon, Nanotube, Plasma, Physics, Princeton Plasma Physics Laboratory, PPPL , Princeton, nanosynthesis, adatom

Simulation Demonstrates How Exposure to Plasma Makes Carbon Nanotubes Grow

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PPPL research performed with collaborators from Princeton University and the Institute for Advanced Computational Science at the State University of New York at Stony Brook has shown how plasma causes exceptionally strong, microscopic structures known as carbon nanotubes to grow.

Science

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Nuclear Physics, vorticity, quark gluon plasma, RHIC, STAR detector

'Perfect Liquid' Quark-Gluon Plasma Is the Most Vortical Fluid

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Particle collisions recreating the quark-gluon plasma (QGP) that filled the early universe reveal that droplets of this primordial soup swirl far faster than any other fluid. The new analysis from the Relativistic Heavy Ion Collider (RHIC) shows that the "vorticity" of the QGP surpasses the whirling fluid dynamics of super-cell tornado cores and Jupiter's Great Red Spot, and even beats out the fastest spin record held by nanodroplets of superfluid helium.







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