Lifeboat Foundation

Researchers are getting ready to turn on the world’s biggest ‘Stellarator’ fusion reactor. Called Wendelstein 7-X (W7-X), the reactor can uninterruptedly contain super-hot plasma for more than 30 minutes at a time. Scientists claim the rare design, which is contained in a giant lab in Greifswald, Germany, can finally help make fusion power a reality. Comprising super-hot plasma for long durations has been the Holy Grail for nuclear reactor designs, and can help researchers to deliver an inexhaustible source of power. Fusion reactors, for instance the W7-X, work by using two isotopes of hydrogen atoms — deuterium and tritium — and inserting that gas into a restraint vessel. Researcher then add energy that eliminates the electrons from their host atoms, creating what is described as an ion plasma, which discharges enormous amounts of energy.

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Some nice photos of odd-looking components.

Germany’s new stellarator was “hell on Earth” to build, but it will be worth it—if it works.

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“Tens of billions of dollars have been spent in the past 60 years, entire careers have been invested, but the ability to produce a commercially viable nuclear fusion reactor remains undemonstrated.”

For 60 years the world’s been waiting for cheap, clean, safe, sustainable power from nuclear fusion. Are we there yet?

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The sun powers itself through nuclear fusion. CNN’s Rachel Crane explores whether we could power everything on Earth the same way.

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An illustration of a tokamak with plasma (credit: ITER Organization)

Fusion reactors could become an economically viable means of generating electricity within a few decades, replacing conventional nuclear power stations, according to new research at Durham University and Culham Centre for Fusion Energy in Oxfordshire, U.K.

The research, published in the journal Fusion Engineering and Design, builds on earlier findings that a fusion power plant could generate electricity at a price similar to that of a fission plant and identifies new advantages in using new superconductor technology.

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Fusion energy may soon be used in small-scale power stations. This means producing environmentally friendly heating and electricity at a low cost from fuel found in water. Both heating generators and generators for electricity could be developed within a few years, according to research that has primarily been conducted at the University of Gothenburg.

Nuclear fusion is a process whereby atomic nuclei melt together and release energy. Because of the low binding energy of the tiny atomic nuclei, energy can be released by combining two small nuclei with a heavier one. A collaboration between researchers at the University of Gothenburg and the University of Iceland has been to study a new type of nuclear fusion process. This produces almost no neutrons but instead fast, heavy electrons (muons), since it is based on nuclear reactions in ultra-dense heavy hydrogen (deuterium).

“This is a considerable advantage compared to other nuclear fusion processes which are under development at other research facilities, since the neutrons produced by such processes can cause dangerous flash burns,” says Leif Holmlid, Professor Emeritus at the University of Gothenburg.

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A cutaway view of the proposed ARC reactor (credit: MIT ARC team)

MIT plans to create a new compact version of a tokamak fusion reactor with the goal of producing practical fusion power, which could offer a nearly inexhaustible energy resource in as little as a decade.

Fusion, the nuclear reaction that powers the sun, involves fusing pairs of hydrogen atoms together to form helium, accompanied by enormous releases of energy.

Continue reading “MIT designs small, modular, efficient fusion power plant” »

Lasers vaporize radioactive material and cause a fusion reaction — in effect, a small thermonuclear explosion (credit: Patent Yogi/YouTube)

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