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UK’s quest for nuclear fusion.

The UK’s quest for affordable fusion by 2040 , For decades, fusion has been the alchemy of our technological age. So, how feasible is the UK’s plan to build a commercially viable fusion power plant by 2040? https://www.bbc.com/future/article/20201214-the-uks-quest-for-affordable-fusion-by-2040

he science of nuclear fusion was proven in the early 1930s, after fusion of hydrogen isotopes was achieved in a laboratory. And we see fusion in action every day. The stars, including our Sun, are giant self-sustaining fusion reactors. ……..

Unlike nuclear fission, which breaks heavy atoms apart, nuclear fusion compresses light atoms together. This means there is far less harmful waste created by fusion. Neutron bombardment causes a fusion plant to become slightly radioactive, however these radioactive products are short-lived. Fusion therefore offers the tantalising potential for near-limitless, climate-friendly energy production that doesn’t come with a shadow of radioactive waste.

Test reactors, such as the Joint European Torus (Jet) at Culham in England, have proved fusion is possible, albeit for short periods of time. The challenge is turning these experimental reactors into an ongoing process that is commercially viable. For this, it would need to generate more power than is needed to keep the fusion reaction going.

For decades, we have been promised that commercial fusion power plants will exist within 30 years. As far back as 1955, the physicist Homi J Bhabha claimed we would have fusion power within two decades. This claim, and many others since, have repeatedly failed to be achieved. The promise is eternal, but fusion always seems that same distance away………. https://www.bbc.com/future/article/20201214-the-uks-quest-for-affordable-fusion-by-2040

December 26, 2020 - Posted by Christina Macpherson | technology, UK

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