论文标题
研究宇宙射线照相对福岛daiichi的单元2核反应堆状态的调查
Investigation of the Status of Unit 2 Nuclear Reactor of the Fukushima Daiichi by the Cosmic Muon Radiography
论文作者
论文摘要
我们已经通过称为宇宙MUON射线照相的方法研究了福基岛Daiichi核电站的核碎片的状态。在此测量中，将MUON检测器放在反应器建筑物外面，就像对单元1反应器的测量一样。与先前的测量值相比，检测器的大小尺寸缩小，这使我们有可能将其定位到反应器，并特别研究燃料加载区的下部。我们通过反应堆建筑物的厚混凝土壁确定了反应器的内部结构，例如围绕容器，压力容器和其他物体。此外，观察结果表明，压力容器底部存在重型物质，可以将其解释为熔化的核燃料从装载区掉落的碎屑。
We have investigated the status of the nuclear debris in the Unit-2 Nuclear Reactor of the Fukushima Daiichi Nuclear Power plant by the method called Cosmic Muon Radiography. In this measurement, the muon detector was placed outside of the reactor building as was the case of the measurement for the Unit-1 Reactor. Compared to the previous measurements, the detector was down-sized, which made us possible to locate it closer to the reactor and to investigate especially the lower part of the fuel loading zone. We identified the inner structures of the reactor such as the containment vessel, pressure vessel and other objects through the thick concrete wall of the reactor building. Furthermore, the observation showed existence of heavy material at the bottom of the pressure vessel, which can be interpreted as the debris of melted nuclear fuel dropped from the loading zone.
