File:Microwave Energy Injector for Commonwealth Fusion Systems (48138628423).jpg
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The energy injector is like 4000 microwave ovens, another innovative design element of this reactor. They use a process called radio-frequency heating to ignite the nuclear fuel. These antennae outside the tokamak reactor use a specific frequency of radio waves to excite the particles. The radio waves are calibrated to target just the less abundant material, in this case hydrogen ions. Because the hydrogen accounts for a small fraction of the fuel's total density, focusing the radio-frequency heating on the minority ions allows them to reach extreme energy levels. The excited hydrogen ions then slam into the more abundant deuterium ions, and resulting particles fly into the reactor's outer shell, generating heat and electricity. And then... "Researchers improved the efficiency of this process by adding helium-3 ions to the mix. The new fuel contains less than one percent helium-3. By focusing all the radio-frequency heating on this trace amount of helium-3, the researchers raised the ions to megaelectronvolt (MeV) energies. An electronvolt is the amount of energy gained or lost when a single electron jumps from a point of electric potential to a point one volt higher, a common unit of measurement for fusion experiments. The new results with helium-3 fuel, generating ions that reach megaelectronvolt energies, has never been achieved before, and the increase in ion energy is a full order of magnitude higher than previous efforts." — <a href="https://www.popularmechanics.com/science/energy/a27961/mit-nuclear-fusion-experiment-increases-efficiency" rel="noreferrer nofollow">Popular Mechanics</a> |
| Date | |
| Source | Microwave Energy Injector for Commonwealth Fusion Systems |
| Author | Steve Jurvetson from Los Altos, USA |
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This image was originally posted to Flickr by jurvetson at https://flickr.com/photos/44124348109@N01/48138628423. It was reviewed on 13 December 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
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| current | 15:27, 13 December 2020 | | 4,032 × 3,024 (4.29 MB) | Eyes Roger (talk | contribs) | Transferred from Flickr via #flickr2commons |
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