plasma
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Physics
Physicists capture the elusive plasma instability in unprecedented detail
“Shadowgraphy” allows scientists to visualize fluctuations in plasma density and measure filament instability. Credit: Imperial College London For the first time, scientists have “photographed” the rare plasma instability in which high-energy electron beams form in spaghetti-like filaments. A new study published in the Physical Review Letter outlines how high-intensity infrared lasers were used to generate filamentation instability. This is a…
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Physics
Plasma Arc Cutting: Scientists Decode Gas Flow Dynamics
Curvature leads to shock waves, reducing gas flow velocity and plasma arc cutting process efficiency. Credit: Upendra Tuladhar, Busan National University Plasma Arc Cutting (PAC) is a thermal cutting technology widely used in manufacturing applications such as shipbuilding, aerospace, manufacturing, abolition of nuclear power plants, construction and automotive industries. This process involves high-speed ejection of plasma or ionized gases, and…
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Physics
Elucidating the mechanism of coupled plasma fluctuations through simulation
Time evolution of the frequency spectrum of distribution functions and fluctuations of high-energy particles. In the initial state, the energy particle distribution function is mountain-like. There is a slope in the first region of variation where it starts to grow, and as the shape of the mountain changes, the slope of the distribution function becomes steeper in the second region…
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Nanotechnology
Nanoparticle approach enhances detection of low-abundance proteins in plasma
PtdChos can deplete the most abundant plasma proteins in the protein corona profile. Credit: Nature Communications (2024). DOI: 10.1038/s41467-024-53966-z In a recent study published in Nature Communications, scientists from Karolinska Institutet’s Department of Microbiology, Tumors and Cell Biology, in collaboration with Michigan State University, introduced an innovative approach to improve plasma proteome profiling. Researchers have developed a new method that…
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Physics
New AI model of plasma heating leads to important modifications to computer code used in fusion research
1) and (b) WEST (i.e., fundamental resonance). is shown. (for hydrogen). Credit: Fusion (2024). DOI: 10.1088/1741-4326/ad645d” width=”800″ height=”437″/> Balanced configuration used for (a) NSTX database and (b) WEST database. Corresponding to shots 138 506 and 56 898 respectively. On the left, the magnetic equilibrium is shown with the highlighted LCFS (red) and the surface wall facing the plasma (black). On…
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Physics
AI enhances plasma plume analysis
On the left is a human visual depiction of a pulsed laser deposition plasma plume. On the right is an image from a video showing an AI interpretation of the plasma plume to predict film growth characteristics. Credit: Sumner Harris/ORNL, U.S. Department of Energy In a paper published in the journal npj Computational Materials, scientists at Oak Ridge National Laboratory…
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