A major advance in fusion research announced in Washington on Tuesday was decades in coming
Energy Fusion Explainer
Using powerful lasers to focus enormous energy on a miniature capsule half the size of a BB, scientists at the Lawrence Livermore National Laboratory in California started a reaction that produced about 1.5 times more energy than was contained in the light used to produce it. The reaction happens when two light nuclei merge to form a single heavier nucleus. Because the total mass of that single nucleus is less than the mass of the two original nuclei, the leftover mass is energy that is released in the process, according to the Department of Energy.
“Of course, now people are thinking, well, how do we go to 10 times more or 100 times more? There’s always some next step,” Kuranz said. “But I think that’s a clear line of, yes, we have achieved ignition in the laboratory.”One way scientists have tried to recreate nuclear fusion involves what’s called a tokamak — a doughnut-shaped vacuum chamber that uses powerful magnets to turn fuel into a superheated plasma where fusion may occur.
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