Nuclear Fusion Has Broken Even For the First Time Ever

Illustration for article titled Nuclear Fusion Has Broken Even For the First Time Ever

Nuclear fusion, the same process that powers the sun, could provide us with limitless cheap energy—but experiments to date have always used more power than they created. Now, though, researchers have apparently tipped that balance, making fusion a real possibility.

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Researchers at the National Ignition Facility in Livermore, California, have been conducting fusion experiments for some time. Using 192 beams from the world's most powerful laser, they heat and compress a small pellet of hydrogen fuel until nuclear fusion reactions take place. Usually, they have to dump more power in using the lasers than they manage to create from the fusion reaction.

The BBC is reporting, though, that during an experiment conducted in the facility during September the "amount of energy released through the fusion reaction exceeded the amount of energy being absorbed by the fuel". If it's true, it's the first time any fusion experiment has managed such a feat—and it's a huge milestone in our quest for fusion power.

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It's not the Holy Grail, though. What researchers really want to achieve is ignition: the point at which the nuclear fusion reaction generates as much energy as the lasers supply. That's not the same as the recent observation, because there are inefficiencies in the fusion system which mean that not all the energy supplied through the laser is delivered to the fuel.

Still, that doesn't stop this being a massive leap forward. A little more work, and fusion could soon become a real thing. [BBC]

Image by Lawrence Livermore National Laboratory

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DISCUSSION

The National Ignition Facility in Livermore is a huge and preposterous government boondoggle that squashes one single grain of material to produce energy. Then they have to wait for months to do it again like some demented lab trick. No commercial power plant will ever result from this. Maybe the Department of War has a plan for it.

Better to bet on ITER, which should have been built in Korea, a country that knows how to get big things done.

We already have a perfectly good fusion plant operating...it's called "Sun" and all we have to do is capture its energy. Pass the bullfrog please, and get me another Margarita.