Phys.org September 8, 2022
An international team of researchers (South Korea, Princeton University, Columbia University) generated plasmas at a temperature of 100 million kelvin lasting up to 20 seconds without plasma edge instabilities or impurity accumulation. They used edge-transport barrier which shapes the plasma in a way that prevents it from escaping, and an internal transport barrier that works by creating an area of high pressure near the center of the plasma to keep it under control. According to the researchers use of the internal transport barrier resulted in much denser plasma than the other approach. A higher density made it easier to generate higher temperatures near the core. It led to lower temperatures near the edges of the plasma, which is easier on the equipment used for containment…read more. TECHNICAL ARTICLEÂ
Comparison between a FIRE mode and a hybrid mode. Credit: Nature volume 609, pages269–275, (2022)Â