Tag Archives: GammaRay
Astronomers just measured a whole lot more than gravitational waves
Gamma ray telescope spots ancient, intense black holes
Gamma ray map offers best view yet of our galaxy’s energy
University of Michigan activates antimatter ‘gun,’ cartoon supervillians twirl moustaches anew
At the University of Michigan, an international team of physicists has begun experimenting with its tabletop-sized super laser, modding it into an antimatter "gun." It's not quite a black hole-firing pistol, but we're slightly terrified nonetheless. Up until now, machines capable of creating positrons -- coupled with electrons, they comprise the energy similar to what's emitted by black holes and pulsars -- have needed to be as large as they are expensive. Creating these antimatter beams on a small scale will hopefully give astrophysicists greater insight into the "enigmatic features" of gamma ray bursts that are "virtually impossible to address by relying on direct observations," according to a paper published at arXiv. While the blasts only last fractions of a second each, the researchers report each firing produces a particle-density output level comparable to the accelerator at CERN. Just like that, the Longhorns/Wolverines super-laser arms-race begins again.
Filed under: Science
Source: arXiv
Scientists bend gamma rays, could neuter radioactive waste
Bending most light is easy; bending it in gamma ray form, however, has often been deemed impossible given how hard it is for electrons to react to the extreme frequencies. University of Munich scientist Dietrich Habs and his Institut Laue-Langevin teammate Michael Jentschel have proven that assumption wrong: an experiment in blasting a silicon prism has shown that gamma rays will refract just slightly through the right material. If a lens is made out of a large-atom substance like gold to bend the rays further, the researchers envision focused beams of energy that could either detect radioactive material or even make it inert by wiping off neutrons and protons. In theory, it could turn a nuclear power plant's waste harmless. A practical use of the technology is still some distance off -- but that it's even within sight at all just feels like a breakthrough.
Scientists bend gamma rays, could neuter radioactive waste originally appeared on Engadget on Thu, 10 May 2012 05:54:00 EDT. Please see our terms for use of feeds.
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