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长期以来，核聚变领域悬着一把达摩克利斯之剑——“密度极限”。一旦试图超越这道红线，高温等离子体便会瞬间溃散。中国科学院合肥物质科学研究院等离子体物理研究所科研团队宣布，有“人造太阳”之称的全超导托卡马克核聚变实验装置（EAST）首次通过实验证实了“密度自由区”的存在，装置运行密度成功突破“格林沃尔德极限”达1.3~1.65倍。2026年1月1日，相关研究成果发表于《Science Advances》。

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（图片来源：中国科学院合肥物质科学研究院等离子体物理研究所官网）

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