Articles tagged with Plasma Temperature
Researchers at the DIII-D tokamak have demonstrated that lithium injections can transiently double temperature and pressure at the plasma edge, delaying instabilities. The results show a 60% increase in total energy-confinement time and improved performance of the plasma.
Researchers improved plasma performance by applying lithium coatings, but the mechanism behind this improvement remains unclear. A new laboratory experiment found that temperature affects lithium's ability to retain deuterium particles, with oxygen exposure improving retention at lower temperatures.
Researchers at Berkeley Lab have refined the measurement of a key property of quark-gluon plasma, revealing new insights into its ultra-hot, frictionless nature. The findings provide clues to the state of the young universe immediately after the big bang.
Researchers have discovered indirect evidence of higher-mass strange baryons in heavy-ion collisions, which lower the temperature at which other particles 'freeze out' from quark-gluon plasma. This finding provides crucial insights into nuclear physics and the formation of matter.
Researchers at the University of Utah created the smallest plasma transistors that can operate in extreme environments, including nuclear reactors. These devices have the potential to enable innovative applications such as medical X-ray imaging and real-time air quality monitoring, and could be used to control robots in nuclear reactors.
Researchers have developed a novel device called the Shoelace Antenna to regulate heat and particle flow through the plasma boundary in a tokamak fusion reactor. The antenna exploits naturally occurring resonant vibrations to achieve this goal.
Researchers have successfully shielded fusion facility walls using lithium vapors, extending protection to 10 times longer than expected. The breakthrough could alleviate concerns about plasma contamination and aborting fusion reactions in future devices.
Scientists have developed a new technique to optimize the transport barrier in fusion plasmas, which is crucial for increasing future fusion power performance. By understanding the pedestal's behavior and its limitations, researchers can predict and improve its pressure and width, leading to enhanced fusion power production.
A computer simulation reveals how intense plasma waves generate suprathermal electrons, which are critical to microchip fabrication. This breakthrough provides a first step toward controlling the plasma-surface interactions and increasing transistor density.
NASA's Solar Dynamics Observatory captured spectacular images of June 7, 2011 solar eruption and splashdown. The event provided an 'up close' view of what happens on distant stars during accretion. Astronomers can now learn about young star growth by analyzing ultraviolet light emission.
The EUNIS mission will gather data on the sun's corona by observing extreme ultraviolet light over a six-minute flight, providing insights into temperature ranges of solar plasma. The instrument will observe wavelengths from 525 to 630 Angstroms, covering temperatures from near the surface to millions of degrees Fahrenheit.
Researchers will develop computer code to model the complex conditions at the edge of fusion plasmas, which could help design and operate facilities for generating electricity from fusion. The validated model could guide developers of next-generation fusion facilities, including ITER.
Research by University of Warwick physicist Dr Kareem Osman reveals that magnetic turbulence is the key to the solar wind's surprising heat. The study shows how turbulence in current sheets heats and accelerates plasma, accounting for 50% of the solar wind's internal energy.
A team of Japanese researchers developed a new method to 'heal' defects in gallium nitride (GaN) using hydrogen radicals. The process restored photoluminescence to nearly normal levels after chlorine plasma etching, improving optical and electrical performance.
A handheld plasma flashlight has been developed to effectively kill bacteria on the skin's surface, including antibiotic-resistant Enterococcus faecalis. The device, powered by a 12-volt battery, generates a plasma plume that penetrates deep into bacterial layers, killing them in tens of seconds.
RUB researchers have solved the puzzle of the solar wind's temperature and energy equipartition by incorporating particle collisions into their model. This new approach explains experimental data significantly better than previous calculations, with implications for other dilute cosmic plasmas.
Recent experiments in the DIII-D tokamak have shown that spinning plasma can prevent magnetic island formation, which reduces fusion power production. By applying torque to spin the plasma faster while minimizing stray magnetic fields, tokamak fusion performance can be raised.
Researchers used a new microwave instrument to study the interplay between plasma turbulence and surface flows in tokamak plasas. They found that turbulent eddies are shredded by large surface flows, turning off turbulence. This equilibrium is crucial for achieving high thermal insulation in fusion experiments.
Researchers compare theory with data from STAR experiment to establish the temperature boundary where ordinary matter and quark-gluon plasma cross over. The team also finds that the highly dynamical systems of gold-gold collisions achieve thermal equilibrium.
Scientists have developed a novel method for creating atmospheric pressure plasma jets using grounded electrodes, which differ from conventional applications. This breakthrough increases operator safety and enables the creation of jets at lower voltages, opening up new possibilities for biomedical applications.
Researchers at CU-Boulder's Brookhaven National Laboratory collaboration used RHIC to create a 'quark-gluon plasma' with temperatures hotter than supernova explosions, recreating Big Bang conditions. The team aims to study the universe's first microseconds after the Big Bang.
Researchers achieve temperature of about 4 trillion degrees Celsius, hotter than the center of the Sun, creating a freely flowing liquid composed of quarks and gluons. This 'quark-gluon plasma' is similar to the substance that filled the universe after its birth 13.7 billion years ago.
Researchers have developed two prototype devices to combat drug-resistant bacteria like MRSA. One device can disinfect human skin safely and quickly, while another can target infested chronic wounds for quicker healing.
Long-standing theoretical predictions have been confirmed in tokamaks, leading to improved performance and efficiency. High-pressure plasmas exhibit synergistic effects, minimizing turbulence and maximizing self-generated heat, which can sustain hot and dense plasma for longer periods.
The University of Nevada, Reno researcher is studying ultra-high temperature plasmas created by the pulsed-power machine at Sandia National Laboratories. The study aims to shed light on high-energy plasma's role in astrophysics, energy production and X-rays.
Tiny flares called nanoflares cause temperatures in the sun's corona to reach millions of degrees. The tiny bursts occur within thin magnetic tubes and release stresses in the field, producing impulsive energy bursts.
Researchers at USC School of Dentistry and Viterbi School of Engineering developed a non-thermal plasma dental probe that destroys bacterial colonies and disinfects hard-to-reach areas. The tool uses pulsed power to create a room temperature plasma with antibacterial properties.
Researchers at Duke University and Brookhaven National Laboratory have observed striking similarities between ultracold gas clouds and ultrahot plasmas. Both exhibit near-perfect fluid flow and anisotropic expansion, expanding like 'exploding cigars'.
The Voyager 2 spacecraft has detected a strong magnetic field in the interstellar region, distorting the bubble of outflowing gas from the sun. Additionally, the temperature was found to be ten times cooler than expected just outside the boundary, sparking new explanations.
UC scientists developed a model to combine current clot-busting medication with below-normal body temperatures to improve ischemic stroke patient treatment. The study found that tPA, an enzyme used in standard stroke treatment, is less effective at lower temperatures, but a higher dosage may be needed.
Researchers found that cholesterol levels peak in the winter and decrease in the summer, with women experiencing greater seasonal variability. The study suggests that changes in plasma volume explain the observed increases in cholesterol levels during the winter months.
Researchers found that a unique blood plasma volume expander can resuscitate rats after severe hemorrhage and apnea, with some surviving up to 7 days without blood transfusions. Hyperbaric oxygen appears to confer advantages in resuscitation and maintenance of circulation.
The UCLA Basic Plasma Science Facility has been awarded a $4.8 million grant to conduct controlled experiments on plasma, a fourth state of matter. The Large Plasma Device (LAPD) machine allows physicists to create and analyze superheated, energized gas, with potential applications in fusion energy, computer chips, and waste destruction.
Astronomers using Chandra X-ray Observatory have discovered that protostars, the youngest stage of star formation, are marked by powerful X-rays from plasma ten times hotter and 100 to 100,000 times brighter than our Sun's flares. This has provided the closest look yet at the youngest stars in the Universe.
A new auto device called plasmatron cuts pollution drastically in all kinds of vehicles, reducing nitrogen oxide emissions by 90%. The device is fully compatible with present engine technology and could offer many benefits envisioned for alternative vehicles sooner and at lower cost.
Penn State engineers have developed a new mini-thruster that draws only 80 Watts of power but produces more thrust than any system in its class. The thruster uses microwave technology to create a free-floating plasma, which generates thrust when released through a nozzle.
The Earth is surrounded by a complex system of electric and magnetic fields, known as the magnetosphere, which interacts with charged particles called plasma. Scientists have developed a general model to describe the density of this surrounding plasma, revealing its behavior and effects on our planet.
The Max-Planck-Gesellschaft has developed a new method for deriving reliable information from experimental data using probability theory, providing significant cost savings. The 'multi-resolution method' is widely applicable to various fields, including fusion research, medicine, and astronomy.
A research team led by Prof. Yitzhak Maron has developed a method to definitively determine how electricity flows through hot and dense plasmas. By measuring the electric current and its distribution in the plasma, scientists can gain crucial information on how to condense plasma more effectively for controlled fusion.
A new type of thin-film transistor developed at the University of Illinois can enhance laptop computer displays by increasing switching speeds. The transistor contains a buried channel that allows electrons to move faster, permitting much higher resolutions.
Researchers at University at Buffalo successfully demonstrate collective flow of nucleons resulting from stopping high-energy lead beam, a critical prerequisite for producing quark/gluon plasma. The achievement confirms theoretical predictions and brings optimism to the field of quark/gluon plasma detection.
A prototype propulsion system powered by a kitchen microwave has the potential to reduce propellant needed by up to 50%, enabling longer satellite lifespans and cost savings. The microwave-powered thruster operates more efficiently than chemical systems and is safer, as it only produces thrust when microwaves are active.