Articles tagged with Plasma
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Researchers at PPPL have found a new mechanism that reduces the risk of damage to tokamak vessels by spreading exhaust heat across a larger area. The discovery challenges previous assumptions about plasma turbulence and its impact on the vessel's performance.
Researchers have found that turbulence is most suppressed at a certain density in fusion plasmas, with transitions occurring below and above this point. Simulations revealed that ion-temperature gradient, pressure gradient, and plasma resistivity cause turbulence changes around the transition density.
A team of researchers from Princeton University and the US Department of Energy's PPPL have successfully deployed machine learning methods to suppress harmful edge instabilities in fusion devices. Their approach optimizes the system's suppression response in real-time, maintaining high plasma performance without sacrificing stability.
A new model refines understanding of plasma edge stability, impacting commercial fusion power. The 'apple' shape tokamaks show greater stability than traditional donut-shaped ones.
Researchers developed a new treatment method using plasma irradiation to speed up bone healing. The study found that displaced fractures exhibited stronger unions than nonirradiated ones, with strength increased by 3.5 times.
Scientists at Princeton Plasma Physics Laboratory successfully simulate a novel combination method for managing fusion plasma. By combining electron cyclotron current drive (ECCD) and resonant magnetic perturbations (RMP), researchers can create a more stable plasma edge, reducing the amount of current required to generate RMPs.
Researchers discovered a new class of plasma oscillations that can exhibit extraordinary features, enabling innovative advancements in particle acceleration and fusion. This finding has significant implications for achieving clean-burning commercial fusion energy.
The Princeton Plasma Physics Laboratory has opened a new Quantum Diamond Lab to study plasma processes for creating diamond material with unique properties. Scientists aim to harness this material for quantum computing, secure communication, and precise measurements, enabling breakthroughs in fields like medicine and energy.
Researchers at PPPL create simulation codes that can accurately predict plasma behavior, reducing the manufacturing and design cycle of silicon chips. This innovation could help the US regain a leadership role in chip industry production.
A team of scientists has developed a new treatment for chronic wounds that uses ionized gas plasma to decontaminate and heal wounds. The technology shows promise in treating diabetic foot ulcers, internal wounds, and potentially cancerous tumours.
Researchers at Tokyo Metropolitan University have developed a novel approach to create nanoscrolls with improved control over nanostructure. The team achieved tight rolls with scrolls up to five nanometers in diameter and multiple microns in length, opening doors for new applications in catalysis and photovoltaic devices.
JET's final deuterium-tritium experiments demonstrated high fusion power consistently produced for 5 seconds, setting a world-record of 69 megajoules using 0.2 milligrams of fuel. The facility has reliably created fusion plasmas with the same fuel mixture as commercial fusion energy powerplants.
Researchers from the University of Rochester's Laboratory for Laser Energetics demonstrated an effective 'spark plug' for direct-drive methods of inertial confinement fusion (ICF), achieving a plasma hot enough to initiate fusion reactions. The successful experiments use the OMEGA laser system, with the goal of eventually producing fus...
Researchers at the University of Córdoba designed a new plasma reactor that generates reactive species capable of degrading organic compounds and killing microorganisms in water. The new configuration expands the applicability of this type of plasmas, enabling efficient removal of high concentrations of dyes from water in minutes.
The Princeton Plasma Physics Laboratory has been awarded $5 million to lead an Energy Earthshot Research Center focused on producing clean hydrogen. The center aims to reduce the cost of hydrogen by 80% and could lead to a paradigm shift in clean hydrogen production.
Researchers at Hokkaido University have discovered that elusive neutrinos can interact with photons in ways not previously detected under extreme conditions. This finding has implications for understanding quantum mechanical interactions of fundamental particles and may help reveal details of the solar corona heating puzzle.
Researchers at Auburn University are developing a Findable, Interoperable, Accessible, and Reusable (FAIR) data platform to manage fusion device data according to FAIR standards. The project aims to accelerate fusion energy research by enabling strong collaborations and promoting diversity in the workforce.
Researchers at Kyoto University have developed a new fusion model that accurately predicts the rotational temperature of hydrogen molecules near the walls of tokamaks. This innovation enables the effective management of heat load and extends the lifetime of future fusion devices.
Using plasma circulating tumor DNA testing can expedite biomarker testing and time to treatment for patients with suspected advanced lung cancer. The study suggests that this approach may improve patient outcomes.
EPFL scientists develop a novel concept, called the active 'plasmacoustic metalayer', which can be controlled to cancel out noise. The device is more compact than conventional solutions, absorbing 100% of incoming sound intensity and offering tunable acoustic reflection over a broad bandwidth.
An international team found that volcanic eruptions can produce equatorial plasma bubbles in the ionosphere, disrupting satellite-based communications. The Tonga eruption triggered an irregular structure of electron density across the equator, delaying radio waves and degrading GPS performance.
A two-day workshop hosted by PPPL discussed the risks and benefits of fusion energy, including concerns about nuclear proliferation and energy justice. Experts emphasized the need for open discussion and regulation to ensure safe and equitable deployment of fusion power.
Researchers at West Virginia University are exploring iodine-based thrusters as an alternative to traditional fuel sources, aiming to reduce dependence on rare noble gases. They plan to develop diagnostic technology to measure the performance of these thrusters, paving the way for widespread use in space exploration.
At the lowest collision energy, QGP production is found to be absent, with a dramatic shift in data characteristics. Higher-order statistical analysis reveals a clear absence of QGP at low energies, providing new insights into nuclear matter phases.
Researchers from Japan propose a novel framework to describe quark-gluon plasma, which agrees better with experimental data. The new model explains the missing particle yields in low transverse momentum region by accounting for nonequilibrium corona components.
A recent study found that transfusion of COVID-19 convalescent plasma is associated with reduced mortality in immunocompromised patients. The research suggests this therapy may be beneficial for these patients, who are at high risk of severe illness and death from COVID-19.
Lehigh University has received nearly $1.75 million in funding from the US Department of Energy to support fusion energy research, specifically for ITER's long-pulse scenarios. The project aims to prepare ITER for operation and address critical research questions related to plasma control.
Researchers discovered that spontaneous plasma waves help neutralize ions detaching from magnetic nozzles, reducing divergence of expanding plasma beams. This breakthrough opens a new perspective on instabilities in plasmas, potentially advancing magnetic nozzle radio frequency plasma thrusters.
A team of researchers from Synchrotron SOLEIL, France, and Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Germany, has successfully demonstrated a free-electron laser driven by plasma acceleration and seeded by additional light pulses. This achievement could lead to the development of more compact and affordable FEL systems.
Researchers at the University of Rochester used x-ray spectroscopy to study radiation transport in dense plasmas. They found that atomic energy level changes do not follow conventional quantum mechanics theories, instead conforming to a self-consistent approach based on density-functional theory.
A Tohoku University researcher has increased the performance of a high-power electrodeless plasma thruster, moving closer to deeper space explorations. The breakthrough enables more efficient use of radiofrequency power to generate thrust energy in magnetic nozzle plasma thrusters.
Researchers at Seoul National University and Princeton University have discovered a new type of self-generated plasma current in a tokamak, which could enable long-pulse fusion operations. The new current source was found to comprise up to 30% of the total plasma current and appears when turbulence is relatively low.
A research team has found a novel operating regime that prevents destructive plasma instabilities in fusion reactors, allowing for the controlled injection of particles at the plasma edge. This approach could lead to a more stable and efficient fusion reactor design.
Researchers at Princeton Plasma Physics Laboratory have successfully applied boron powder to tungsten components in tokamaks, improving plasma confinement and reducing the risk of edge-localized modes. The innovative approach uses a PPPL-developed powder dropper to deposit boron coatings while minimizing disruptions to the magnetic field.
The study discovered that exposure to dinitrogen pentoxide gas can activate plant immunity and control plant diseases, depending on the type of pathogen. This novel approach utilizes reactive nitrogen species generated from plasma technology, which may contribute to the development of a sustainable agricultural system.
A plasma-based approach may one day convert carbon dioxide into oxygen and produce fuels, fertilizers on the red planet. The system could play a critical role in life-support systems and future human settlement on Mars.
The article reviews the physics and progress of THz generation from laser-induced plasmas, highlighting three scenarios in air, liquid, and solid configurations. Strong terahertz generation via plasma is discussed with challenges and future perspectives.
Researchers at PPPL developed smaller, stronger high-temperature superconducting magnets for spherical tokamaks, enabling more efficient fusion power plants. The new magnets reduce construction costs and increase performance by shrinking the size of tokamaks.
Researchers have discovered that resistivity can cause instabilities in plasma edge, making it more stable when included in models. The study aims to design systems for future fusion facilities with improved plasma stability.
Researchers at Osaka University have successfully created a miniature magnetosphere using lasers, directly measuring pure electron outflows associated with magnetic reconnection. This breakthrough sheds light on the microscopic electron dynamics driving space and astrophysical phenomena.
The Department of Energy has awarded Early Career Research Program funding to three Oak Ridge National Laboratory scientists. The awardees will receive $500,000 annually for five years to support their research in fusion energy, advanced scientific computing, and biogeochemical controls on phosphorus cycling.
Scientists have refined the use of magnetic fields to improve tokamak performance by suppressing instabilities called ELMs. The new technique allows plasma to operate in H-mode for longer periods, increasing efficiency and reducing the risk of damage to internal parts.
Researchers at PPPL have discovered that adding tungsten to plasma fuel pellets improves the compression of fuel, increasing fusion yield. The study uses krypton gas to measure X-rays emitted by the pellets, providing new insights into the fusion process.
A new study proposes a mathematical tool to understand the fractal structure of quark-gluon plasma, which is formed in high-energy collisions. The fractal structure explains some phenomena seen in these collisions, including particle momentum distributions that follow Tsallis statistics.
Scientists with NASA's MMS mission have developed a theory explaining how fast magnetic reconnection occurs, which could improve predictions of solar flares and particle storms. The new theory uses the Hall effect to explain why this type of reconnection happens at a consistent speed.
Researchers at Florida Atlantic University found that increasing sun exposure in rehabilitation facilities can enhance health and recovery in green sea turtles with fibropapillomatosis. Vitamin D levels increased significantly in turtles exposed to higher UV light, leading to less tumor regrowth and improved overall health.
A WVU postdoctoral researcher has made a groundbreaking discovery in the field of magnetic reconnection, which can be used to predict space weather events that affect satellite and power grid systems. The study uses advanced laser diagnostics to measure electron speeds, providing new insights into plasma physics processes.
Researchers at Toyohashi University of Technology developed an ultra-high-rate coating technology for functional hard carbon films using vacuum plasma. The new method achieved a film deposition rate exceeding one order of magnitude faster than existing technologies while maintaining the same degree of film quality.
Researchers demonstrated plasma acceleration at megahertz repetition rates, opening doors to boosting particle energy with plasma accelerator modules as booster stages. The recovery time of the plasma wave was found to be approximately 70 nanoseconds.
Researchers from Hefei Institutes of Physical Science identified the dominant mechanism for core heavy impurities accumulation and control. Large toroidal rotation and density peaking contribute to heavy impurity accumulation.
Researchers at Osaka University have successfully accelerated energetic ions using graphene targets irradiated with ultra-intense lasers, overcoming previous limitations. The findings demonstrate the robustness of graphene in this application and pave the way for compact and efficient plasma-based accelerators.
Researchers at GIST used ultrafast X-ray pulses to study warm dense copper electrons, revealing that bonds harden before melting. The findings could improve understanding of extraordinary material properties and their underlying mechanisms.
Researchers developed a promising alternative to traditional wet-chemistry methods using plasma-enabled surface engineering. The technology can create contact-killing, antifouling, and drug-release surfaces, accelerating antimicrobial material development.
Researchers create laboratory model to experimentally confirm the behavior of plasma waves as predicted by theory. By studying the properties of liquid metals and high magnetic fields, they successfully generate Alfvén waves in a molten alkali metal, breaking through the sound barrier for the first time.
Researchers at the DOE's Princeton Plasma Physics Laboratory discovered a process in plasma swirling around black holes that causes previously unexplained emissions of light and heat. The process, known as magnetic reconnection, also jettisons huge plumes of plasma billions of miles in length.
Physicists at PPPL have discovered a new way to measure and understand high-energy-density plasmas, which are essential for fine-tuning inertial confinement fusion experiments. The study revealed that ion temperatures and electron temperatures were not equivalent, providing new insights into the behavior of these extreme states of matter.
Recent simulations using Gkeyll reveal that neutral particles significantly impact plasma density, temperature, and flow levels in the scrape-off layer region of tokamaks. The inclusion of neutrals leads to reduced plasma fluctuations and slower blob motion.
A new coil design could mitigate disruption-driven runaway electrons in tokamaks. The SPARC team's innovative coil structure addresses the threat by introducing a non-axisymmetric perturbation that spoils confinement and protects the machine.
Researchers track migration of fast ions, revealing routes influenced by Alfvén waves. The observed patterns suggest a large-scale migration among different routes, with some ions escaping the core and others returning to it.
A new study from the University of Southampton demonstrates a safe method to clean and reuse facemask respirators using advanced low-temperature plasma technology. This technique can remove 99.99% of coronavirus while maintaining filter performance, reducing plastic waste by approximately 70%.