Controlled fusion is little nearer now than it was a week ago

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Controlled fusion is little nearer now than it was a week ago
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Despite excited reports and a hurricane of publicity, recent results from America’s National Ignition Facility will not lead to civil fusion reactors:

Save time by listening to our audio articles as you multitaskThat an American cabinet member should make time in her diary to grace the announcement of an arcane result in physics is odd. But so is the whole episode. For the result in question has been the centre of a media storm, starting on December 11th with an article in the, and followed by a hurricane of publicity when the actual moment came.

Well, we aren’t. And it isn’t. Or, if it is, that has little to do with recent events in Livermore, California, whereis located. The result Ms Granholm attached herself to is interesting. But a useful step towards electricity generation by fusion it is not.is part of Lawrence Livermore National Laboratory, the main purpose of which is to investigate the physics of hydrogen bombs.

The strong force is attractive, not repulsive. It pulls the protons and neutrons of the parent nuclei together into a heavier, daughter nucleus. That daughter requires less energy to bind it than do the parents, so the surplus is released—80% of it as kinetic energy of the departing neutron and 20% as kinetic energy of the helium.’s researchers have released more energy from an imploding pellet than was inserted by the laser beams.

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