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Old 12-12-2022, 01:17 PM
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Default US scientists reach long-awaited nuclear fusion

This could be amazing

US scientists reach long-awaited nuclear fusion

https://www.cnn.com/2022/12/12/polit...ate/index.html

CNN

For the first time ever, US scientists at the National Ignition Facility at the Lawrence Livermore National Laboratory in California successfully produced a nuclear fusion reaction resulting in a net energy gain, a source familiar with the project confirmed to CNN.

The US Department of Energy is expected to officially announce the breakthrough Tuesday.

The result of the experiment is a massive step in a decadeslong quest to unleash an infinite source of clean energy that could help end dependence on fossil fuels. Researchers have for decades attempted to recreate nuclear fusion – replicating the fusion that powers the sun.

US Energy Secretary Jennifer Granholm will make an announcement Tuesday on a “major scientific breakthrough,” the department announced Sunday. The breakthrough was first reported by the Financial Times.

Nuclear fusion happens when two or more atoms are fused into one larger one, a process that generates a massive amount of energy as heat.

Scientists across the globe have been inching toward the breakthrough; in February, UK scientists announced they had more than doubled the previous record for generating and sustaining nuclear fusion.

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A giant donut-shaped machine just proved a near-limitless clean power source is possible
In a huge donut-shaped machine called a tokamak outfitted with giant magnets, scientists working near Oxford were able to generate a record-breaking amount of sustained energy. Even so, it only lasted 5 seconds.

The heat sustained by the process of fusing the atoms together holds the key to helping produce energy.

As CNN reported earlier this year, the process of fusion creates helium and neutrons – which are lighter in mass than the parts from which they were originally made.

A model of the reactor of the future, ITER (International Thermonuclear Experimental Reactor). Cowley says the experiments at ITER are critical. They are designed to reach a self-sustaining fusion burn -- the last scientific hurdle to fusion power, he says.
An artificial sun briefly blazed under the English countryside. One day, it could change everything
The missing mass then converts to an enormous amount of energy. The neutrons, which are able to escape the plasma, then hit a “blanket” lining the walls of the tokamak, and their kinetic energy transfers as heat. This heat can then be used to warm water, create steam and power turbines to generate power.

The machine that generates the reaction has to undergo serious heat. The plasma needs to reach at least 150 million degrees Celsius, 10 times hotter than the core of the sun.

An aerial photo shows Lawrence Livermore National Laboratory in Livermore, California.
An aerial photo shows Lawrence Livermore National Laboratory in Livermore, California.
National Nuclear Security Administration/Handout/Reuters/FIle
The big challenge of harnessing fusion energy is sustaining it long enough so that it can power electric grids and heating systems around the globe.

A UK fusion scientist told CNN that the result of the US breakthrough is promising, but also shows more work needs to happen to make fusion able to generate electricity on a commercial scale.

“They have worked on the design and the makeup of the target and the shape of the energy pulse to get much better results,” Tony Roulstone, from the University of Cambridge’s Department of Engineering, told CNN.

“The opposing argument is that this result is miles away from actual energy gain required for the production of electricity. Therefore, we can say (it) is a success of the science but a long way from providing useful energy.”
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Old 12-12-2022, 02:18 PM
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o


When I was in 5th grade, I did a science project on the opposite reaction (nuclear-fission.)

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Old 12-12-2022, 06:46 PM
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only lasted 5 seconds?


did they name the machine Dam?
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Old 12-12-2022, 09:40 PM
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Originally Posted by omahacolt View Post
only lasted 5 seconds?


did they name the machine Dam?
At least they did this work some place safer than under the football stands at U of Chicago.
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Old 12-14-2022, 08:59 PM
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This is a huge fucking deal if they can harness this in and be sustainable. A few seconds is a start.
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Old 12-16-2022, 04:46 PM
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This is a huge fucking deal if they can harness this in and be sustainable. A few seconds is a start.
Thank you, you made me think of Neil Armstrong…….. small step for man……
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