-China’s Artificial Sun Reactor Breaks Fusion Barrier
- China's nuclear fusion reactor, dubbed the "artificial sun," has breached a major fusion limit by firing plasma beyond its usual operational range, advancing humanity's slow progress towards near-limitless...
- the Experimental Advanced Superconducting Tokamak (EAST) kept plasma - the high-energy fourth state of matter - stable at extreme densities, which was previously seen as a major obstacle...
- "The findings suggest a practical and scalable pathway for extending density limits in tokamaks and next-generation burning plasma fusion devices," study co-led author Ping Zhu, a professor in...
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China‘s nuclear fusion reactor, dubbed the “artificial sun,” has breached a major fusion limit by firing plasma beyond its usual operational range, advancing humanity’s slow progress towards near-limitless clean energy.
the Experimental Advanced Superconducting Tokamak (EAST) kept plasma – the high-energy fourth state of matter – stable at extreme densities, which was previously seen as a major obstacle in the growth of nuclear fusion, according to a statement released by the Chinese Academy of Sciences.
Nuclear fusion offers the potential for near-
China’s ‘Artificial Sun’ Sustains fusion Reaction for Record Time
Chinese scientists have achieved a major milestone in the pursuit of nuclear fusion,sustaining a stable plasma for over 1,000 seconds in the Experimental Advanced Superconducting Tokamak (EAST) reactor. This breakthrough represents a significant step toward harnessing fusion power as a clean and virtually limitless energy source.
While EAST has previously achieved high temperatures needed for fusion, maintaining a stable reaction for an extended period has been a key challenge. The reactor has been steadily increasing the duration it can maintain a steady, highly confined loop of plasma.
Fusion researchers often encounter a density limit known as the Greenwald Limit. Exceeding this limit typically causes plasma instability. Higher plasma densities increase the likelihood of atoms colliding, reducing the energy needed to initiate fusion, but also risk extinguishing the reaction.
To surpass the Greenwald Limit, researchers at EAST meticulously controlled the plasma’s interaction with the reactor walls. They focused on two crucial factors when starting the reactor: the initial fuel gas pressure and the electron cyclotron resonance heating.
This achievement doesn’t mean fusion power is imminent. Though, it provides valuable data and experience for the development of larger, more powerful fusion reactors, like the International Thermonuclear Experimental Reactor (ITER) currently under construction in France.
Further research will focus on increasing plasma density and temperature while maintaining stability, bringing the world closer to realizing the potential of fusion energy.