Radio waves drive a fusion plasma current that could help reactors run continuously
For the first time, a team of physicists in the U.S. has clearly demonstrated a "helicon current drive" in a nuclear fusion experiment. Led by Jeff Lestz at General Atomics, San Diego, the team took advantage of the latest advances in tokamak technology to show that radio waves s
Achieving sustained nuclear fusion has long been a holy grail for physicists and engineers. The challenge lies in maintaining a stable and continuous plasma current, which is essential for harnessing the energy released by fusion reactions. The experiment conducted by Jeff Lestz and his team at General Atomics marks a significant milestone in this pursuit, as it successfully demonstrates the use of radio waves to drive a fusion plasma current.
This breakthrough is particularly noteworthy in the context of tokamak technology, which has been a leading approach to achieving controlled nuclear fusion. Tokamaks rely on a toroidal (doughnut-shaped) magnetic confinement to contain and heat the plasma. The ability to sustain a plasma current using radio waves, specifically through the helicon current drive mechanism, could help overcome one of the major hurdles in developing practical fusion reactors. If successful, this innovation could enable reactors to operate continuously, rather than in pulses, which would greatly enhance their efficiency and viability.
As the team continues to refine their technique and explore its applications, the next thing to watch is how this technology can be scaled up and integrated into larger, more complex fusion reactors. The success of helicon current drive in sustaining plasma currents could have far-reaching implications for the development of commercial fusion power, and it will be crucial to follow the ongoing research and experimentation in this area. The potential for practical, continuous fusion power has significant implications for the future of energy production, and MechNews will continue to monitor and report on advancements in this field.
Originally reported by phys.org. MechNews adds analysis for science & discovery readers.