Double Chooz合作团队在法国北部Chooz核电站取得突破，首次成功检测到已关闭核反应堆释放的残余反中微子信号。1这些反中微子来自反应堆核心和附近乏燃料池中长寿命放射性裂变产物的衰变。1研究人员在位于反应堆核心约400米地下的Double Chooz探测器中观测了17.2天，期间两个反应堆单元完全关闭，最终检测到约100个反中微子候选事件。1
这项研究由Max-Planck-Institut für Kernphysik的Anthony Onillon和Thierry Lasserre领导，检测结果与核燃料衰变的理论预测相符。1Double Chooz探测器内含有30立方米以上的液体闪烁体，用于捕捉反中微子信号。1这一成功表明，反中微子探测器可用于对离线状态下的核反应堆进行监测。1相关研究成果已发表在《Physical Review Letters》期刊2026年第137卷第6期。1JUNO-TAO实验也在进行类似研究，相关结果在Neutrino 2026会议上展示。1
The Double Chooz collaboration has achieved the first successful detection of residual antineutrinos emanating from a closed nuclear reactor 1. The ghostly afterglow originates from long-lived radioactive fission products decaying within the reactor core and adjacent spent fuel pools 1. The detection, comprising approximately 100 antineutrino candidate events collected over 17.2 days while both reactor units at the Chooz Nuclear Power Station in northern France remained fully shut down, aligns with predictions based on nuclear fuel decay models 1.
The experiment employed a detector positioned roughly 400 meters from the reactor core underground, containing more than 30 cubic meters of liquid scintillator material 1. Research led by Anthony Onillon and Thierry Lasserre at the Max Planck Institute for Nuclear Physics demonstrates that antineutrino detectors can effectively monitor nuclear reactors in offline status 1. The findings, published in Physical Review Letters Volume 137, Issue 6 in 2026, establish a new capability for nuclear facility monitoring 1. Related research through the JUNO-TAO experiment is pursuing similar investigations, with results presented at the Neutrino 2026 conference 1.
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