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The energy of "nuclear laser fusion" is closer to reality

A research team brings humanity closer to nuclear fusion achieved through the use of lasers.

August 20 2021
Gianluca RiccioGianluca Riccio
⚪ 2 minutes
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Laser fusion

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Scientists have just come close to a fusion power system that doesn't rely on reactors tokamak based on magnetic fields or on tortuous solutions.

Science magazine reports that a team of the Lawrence Livermore National Laboratory has reached a breakthrough in laser nuclear fusion energy by getting very close to the "ignition" phase that produces additional energy production.

How laser melting works

The researchers triggered the event with an explosion of 20 nanoseconds from 192 laser beams pointed at a tiny sphere full of isotopes of hydrogen, deuterium and tritium, in turn housed in a small gold cylinder.

The laser beam vaporizes the gold, producing X-rays that implode the capsule and create fusion.

The experiment produced an ignition 70%, or 1,35 megajoules of 1,9 MJ from the laser. It's well below what a laser fusion power source would serve, but it is nonetheless eight times more powerful than the lab had done before.

Laser fusion
The “celebratory” image of the result obtained, appeared on the National Ignition Facility website

Laser fusion: the next steps

It will take some time for the results to become compatible with mass use. The research team will have to further refine the process and achieve full ignition. There is also a big gap between achieving ignition and making a final nuclear laser fusion power system. We need to produce these "blasts" of fusion at a speed close to 10 per second to harvest energy from the resulting neutrons.

The article continues after the related links

LCLS-II: the most powerful X-ray laser in the world turned on

Laser and solar: the innovation that illuminates the future of energy

However, the test shows that nuclear fusion based on this different approach is a much more realistic prospect than initially thought.

If there is further progress, the technique could work great.

Produce truly "unlimited" energy that could solve grid capacity problems while remaining clean and safe? Not bad really.

Tags: nuclear fusionlaser

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