Large space - weather events, such as geomagnetic storms, can alter the incoming radio waves — a distortion that scientists can use to determine the concentration of
plasma particles in the upper atmosphere.
One of his main achievements was inventing a «magnetic nozzle» that could spray
the plasma particles in a high - speed jet.
Not exact matches
The modeling helps scientists deduce important pieces of information for space weather forecasting —
in this case, for the first time, the density of the
plasma around the shock,
in addition to the speed and strength of the energized
particles.
They teamed up with James Dedrick and Andrew Gibson from the York
Plasma Institute, University of York, U.K. to study how plasma behavior varies in relation to spatial location, time and particle e
Plasma Institute, University of York, U.K. to study how
plasma behavior varies in relation to spatial location, time and particle e
plasma behavior varies
in relation to spatial location, time and
particle energy.
By combining observations from the ground and
in space, the team observed a plume of low - energy
plasma particles that essentially hitches a ride along magnetic field lines — streaming from Earth's lower atmosphere up to the point, tens of thousands of kilometers above the surface, where the planet's magnetic field connects with that of the sun.
Giant eruptions of hot
plasma and high - energy
particles spewed forth, a Mount Everest's weight of gas
in a single belch.
The computations were made consistent with well - accepted magnetostatic theory and resulted
in spontaneous current sheet development, making them relevant for the study of
particle acceleration
in astrophysical
plasmas.
The New Calculus Other physicists, meanwhile, are employing string theory methodologies
in their study of extreme matter states — from the intensely hot
plasmas produced
in particle colliders to materials created
in laboratories at temperatures close to absolute zero.
Huge swirls at the edge of Mercury's magnetosphere — where the planet's magnetic field meets the energetic charged
particles of the solar wind — help shower the planet
in solar
plasma.
«Updated computer code improves prediction of
particle motion
in plasma experiments.»
The Cassini team will use data collected by one of the spacecraft's science instruments (the Radio and
Plasma Wave Subsystem, or RPWS) to ascertain the size and density of ring
particles in the gap
in advance of future dives.
By arranging their detectors at the edge of a fusion device, researchers have found that they are able to measure high energy
particles kicked out of the
plasma by a type of wave that exists
in fusion
plasmas called an Alfvén wave (named after their discoverer, the Nobel Prize winner Hannes Alfvén).
Theoretical physicists Dam Thanh Son and Andrei Starinets, for example, collaborated on an idea that used black hole math to predict the viscosity of an ultrahot gas, or
plasma, that forms
in certain
particle collider experiments.
The bubble
in question is actually a field of magnetic
plasma, and the bigger this field gets, the faster it will travel, powered by solar winds made of
particles hurtling from the sun at a million miles per hour.
Here they used the UK - developed EPOCH «
particle -
in - cell» code, where
particles are modeled as «chunks» that describe the bigger reality of the dynamics of the
plasma system.
Just after the big bang, our universe was so hot and dense that protons and neutrons couldn't form, and the
particles that make them up — quarks and gluons — floated
in a soup known as the quark - gluon
plasma.
In their new study, the BARREL researchers» major objective was to obtain simultaneous measurements of the scattered particles and of ionoized gas called plasma out in space near Earth's equato
In their new study, the BARREL researchers» major objective was to obtain simultaneous measurements of the scattered
particles and of ionoized gas called
plasma out
in space near Earth's equato
in space near Earth's equator.
A new study published this week
in the journal Physics of
Plasmas, from AIP Publishing, uses computer simulations to show that the cloud of
plasma generated from the
particle's impact is responsible for creating the damaging electromagnetic pulse.
To simulate the results from a hypervelocity impact
plasma, researchers used a method called
particle -
in - cell simulation that allows them to model the
plasma and the electromagnetic fields simultaneously.
Since the experiment fires protons at boron
plasma, it effectively mimics cosmic rays crashing into
plasmas in space, which may aid studies of high - energy
particle behaviour, says Mac Low.
The high voltage is delivered only
in very short bursts, using just enough energy to accelerate the tiny electrons without heating up the heavy gas
particles pulses; thus,
plasma is generated.
The new type of accelerator, known as a laser -
plasma accelerator, uses pulses of laser light that blast through a soup of charged
particles known as a
plasma; the resulting
plasma motion, which resemble waves
in water, accelerates electrons riding atop the waves to high speeds.
Friction between ions and neutral
particles heats the
plasma even more, both
in and around the spicules.
One facility
in Utashinai, Japan, has been doing just that since 2003, using
plasma — an electrically induced stream of hot, charged
particles — to process up to 220 tons of municipal solid waste a day.
Magnetic reconnection,
in addition to pushing around clouds of
plasma, converts some magnetic energy into heat, which has an effect on just how much energy is left over to move the
particles through space.
Solar
plasma produces a distinctive magnetic field because it all comes from the same source; scientists expected that the field would shift
in interstellar space, where
particles flit around
in all directions.
In this new work, Wang's team refined a probe that makes use of a phenomenon researchers at Berkeley Lab first theoretically outlined 20 years ago: energy loss of a high - energy
particle, called a jet, inside the quark gluon
plasma.
In 2004, Pavel Kovtun, now at the University of Victoria in British Columbia, Canada, and his colleagues used string theory to describe a soup of fundamental particles called a quark - gluon plasma created in collisions at the RHIC accelerator at Brookhaven National Laboratory in Upton, New Yor
In 2004, Pavel Kovtun, now at the University of Victoria
in British Columbia, Canada, and his colleagues used string theory to describe a soup of fundamental particles called a quark - gluon plasma created in collisions at the RHIC accelerator at Brookhaven National Laboratory in Upton, New Yor
in British Columbia, Canada, and his colleagues used string theory to describe a soup of fundamental
particles called a quark - gluon
plasma created
in collisions at the RHIC accelerator at Brookhaven National Laboratory in Upton, New Yor
in collisions at the RHIC accelerator at Brookhaven National Laboratory
in Upton, New Yor
in Upton, New York.
In this
plasma, the protons and neutrons that make up atomic nuclei are shattered into a cloud of quarks and gluons,
particles that carry the force that normally keeps quarks together.
In plasma wakefield acceleration, energetic bundles of electrons or positrons traverse a
plasma and generate
plasma «wakes» for trailing bunches of
particles to ride.
The first laser - driven device to spark fusion
in boron
plasma can double as an astrophysical lab for studying how
particle crashes forge elements
In the positron case, the particles are defocused and lost in the plasm
In the positron case, the
particles are defocused and lost
in the plasm
in the
plasma.
Storms on the sun catapult charged
particles into space at tremendous speeds, says
plasma physicist Ruth Bamford of the Rutherford Appleton Laboratory
in Didcot, England.
Charged
particles in the solar wind interact with this
plasma, and the mingling and moving around of all these charges produces currents.
Their model is based
in the dynamics of
plasma — the hot gas of charged
particles that streams along magnetic fields and constitutes the sun.
While this allows scientists to understand some space
plasma phenomena
in detail, it is difficult to get a comprehensive picture of where the
particles came from and where they're going.
The first is turbulence
in the
plasma that allows hot
particles to reach the edge and so lets heat escape.
ITER, which will be finished
in 2019 or 2020, will attempt fusion by containing a
plasma with enormous magnetic fields and heating it with
particle beams and radio waves.
A team led by scientists from the University of California, Los Angeles and the Department of Energy's SLAC National Accelerator Laboratory has reached another milestone
in developing a promising technology for accelerating
particles to high energies
in short distances: They created a tiny tube of hot, ionized gas, or
plasma,
in which the
particles remain tightly focused as they fly through it.
Scientists based previous models on a uniform
plasma in order to simplify the problem — modeling is computationally expensive, and the final model took roughly a year to run with NASA's supercomputing resources — but they realized neutral
particles are a necessary piece of the puzzle.
An unexpected pattern has been glimpsed
in the solar wind, the turbulent
plasma of charged
particles that streams from the sun.
Plasma that erupted from the sun Saturday
in a burst called a coronal mass ejection reached Earth Monday and delivered charged
particles into the upper atmosphere.
The new research analyzes the
plasma surrounding the pulsar by coupling Einstein's theory of relativity with quantum mechanics, which describes the motion of subatomic
particles such as the atomic nuclei — or ions — and electrons
in plasma.
In numerous plasma experiments being conducted in countries around the world, the use of deuterium is improving the confinement of heat and particle
In numerous
plasma experiments being conducted
in countries around the world, the use of deuterium is improving the confinement of heat and particle
in countries around the world, the use of deuterium is improving the confinement of heat and
particles.
Turbulence behavior
in high - temperature
plasma confined
in the magnetic field is described mathematically through a dynamical equation
in five - dimensional space (the three coordinates of space to which two components of
particle velocity are added).
These promising new directions include higher fusion power densities, and hence smaller reactors; development of «transport barriers»
in the
plasma, leading to improved energy confinement and smaller sizes; self - driven
plasma currents that permit steady - state operation and low recirculating power; and the development of advanced divertor concepts to provide
particle control and heat removal over long reactor lifetimes.
J.F.: I would look at charged
particle transport, or how energy and
particles are transported
in plasmas.
These tiny droplets «flow»
in a manner similar to the behavior of the quark - gluon
plasma, a state of matter that is a mixture of the sub-atomic
particles that makes up protons and neutrons and only exists at extreme temperatures and densities.
The yellow - red glow at center shows a hydrodynamic simulation of quark - gluon
plasma created
in particle collisions.
In January 2013, sensors on the ground mapped electrons in the upper atmosphere and saw a tendril of more densely packed particles curling away from the north pole, indicating that a plume of plasma was veering off towards the su
In January 2013, sensors on the ground mapped electrons
in the upper atmosphere and saw a tendril of more densely packed particles curling away from the north pole, indicating that a plume of plasma was veering off towards the su
in the upper atmosphere and saw a tendril of more densely packed
particles curling away from the north pole, indicating that a plume of
plasma was veering off towards the sun.