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U.S. scientists have achieved “ignition” — a fusion reaction that produced more energy than it took to create — a critical milestone for nuclear fusion. ... The best toys of 2024. AOL.
Fusion ignition is the point at which a nuclear fusion reaction becomes self-sustaining. This occurs when the energy being given off by the reaction heats the fuel mass more rapidly than it cools. In other words, fusion ignition is the point at which the increasing self-heating of the nuclear fusion removes the need for external heating. [ 1 ]
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Though fuel was added to the fire by the U.S. achieving fusion ignition in December of 2022, realizing the promise of nuclear fusion still faces many engineering and technological obstacles.
The campaign officially ended in September 2012, at about 1 ⁄ 10 the conditions needed for ignition. [ 9 ] [ 10 ] Thereafter NIF has been used primarily for materials science and weapons research. In 2021, after improvements in fuel target design, NIF produced 70% of the energy of the laser, beating the record set in 1997 by the JET reactor ...
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For comparison, lead is about 11 g/cm 3, so this still represents a considerable amount of compression, notably when one considers the target's interior contained light D-T fuel around 0.1 g/cm 3. [10] Ignition is started by a very-short (~10 picoseconds) ultra-high-power (~70 kJ, 4 PW) laser pulse, aimed through a hole in the plasma at the core.
The U.S. Department of Energy officially announced a breakthrough in nuclear fusion on Tuesday that puts the world one step closer to harnessing an abundant energy source free from carbon ...