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U.S. scientists come closer to achieving ‘holy grail’ of energy production

Posted on October 10, 2013

WASHINGTON, (PNA/RIA Novosti) -– Scientists in the United States have taken a major step towards replicating the process that powers the sun, coming closer than ever to achieving self-sustaining nuclear fusion which generates more energy than it consumes, BBC News reported this week.

In an experiment last month at the National Ignition Facility (NIF) in California, according to the report, researchers used 192 beams from the most powerful laser in the world to heat a tiny metal cylinder containing hydrogen fuel in order to incite nuclear fusion, often described as the “holy grail” of energy production.

The experiment did not generate more energy than the lasers supplied — a threshold known as “ignition” — but did result in the release of more energy than was absorbed by the fuel, BBC News reported.

The experiment is described as the most important achievement in recent years in the drive for nuclear fusion, according to the report, a process touted as having the potential to provide almost limitless supplies of clean, safe and sustainable energy without the downsides of nuclear power produced by fission.

Today’s nuclear power plants produce energy by splitting apart the heavy atoms of uranium fuel — fission — while fusion reactors fuse together atoms.

Unlike nuclear-fission power plants, fusion reactors do not produce high-level radioactive waste.

The initiative is being led by the U.S. Department of Energy’s Lawrence Livermore National Laboratory and includes partners from the University of Rochester’s Laboratory for Laser Energetics, General Atomics, Los Alamos National Laboratory, Sandia National Laboratory, and the Massachusetts Institute of Technology.

The report of the success comes on the heels of a review article in the U.S. scientific journal Physics of Plasmas explaining that the project is bringing nuclear fusion closer to reality.

One major hurdle on the path to that goal is “the premature breaking apart of the capsule” containing two hydrogen isotopes, John Edwards, NIF associate director for inertial confinement fusion and high-energy-density science, said in a press release last month.

The energy from the lasers implodes the capsule “to temperatures and pressures similar to those found at the center of the sun,” according to the press release.

The International Thermonuclear Experimental Reactor facility currently under construction in France plans to attempt to use magnetic fields to contain the fusion fuel, BBC News reported.

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