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).
Not exact matches
I realize these might be unfamiliar units by which to
measure energy, so to give some perspective, it is seven times the
energy of the Tevatron
particle accelerator at Fermilab in Illinois, which is presently the
highest -
energy machine, and 15,000 times the
energy contained in the mass of a single proton at rest.
Farther out, a 2300 - ton structure of steel and scintillators
measures the
energies of strongly interacting
particles, and, finally, from a radius of 5 to 10 m, the so - called «muon spectrometer»
measures the momentum of muons with 2000 m2 of
high precision positioning detectors.
«The fact that the
measured intensities of very
high -
energy neutrinos, ultrahigh -
energy cosmic rays, and
high -
energy gamma rays are roughly comparable tempted us to wonder if these extremely energetic
particles have some physical connections.
The first is its
energy —
higher energies let scientists conjure up more massive
particles (
measured in gigaelectron volts, or GeV).
The team used a novel technique that involves replacing the electrons in hydrogen atoms with negatively charged
particles called muons, and then
measuring subtle shifts in the
energy that is required to bump a muon into a
higher -
energy orbit around the single - proton nucleus.
The Pierre Auger Observatory
measures gigantic showers of relativistic
particles that are the result of collisions between the very rare,
highest -
energy cosmic rays and atomic nuclei of the atmosphere.