论文部分内容阅读
地球内部的铀及钍等重元素发生核裂变时会产生中微子,并释放出巨大能量,从而引起地幔对流和大陆移动。由中日美法四国科学家组成的联合研究小组,利用日本东北大学位于岐阜县的地下装置“KamLAND”,首次捕捉到产生于地球内部的这种物质——中微子。这一发现结束了过去无检测地球中微子的历史,将有可能开创地球科学研究的新局面。这一研究成果已刊登在今年出版的英国《自然》杂志上。“KamLAND”(Kamioka Liquid scintillator Anti-NeutrinoDetector),是在一个球状容器内装入1000t 由油性混合物形成的“液体荧光体”。当中微子飞过来时,就会与之反应并发光,从而可由光电倍增管检测出来。以日本东北大学为主的研
In the nuclear fission of heavy elements such as uranium and plutonium inside the earth, neutrinos are produced and huge energy is released, causing mantle convection and continental movement. A joint research team composed of scientists from China, Japan, the United States, and France used the underground device “KamLAND” of Tohoku University in Gifu Prefecture for the first time to capture this substance, called neutrino, produced inside the Earth. This discovery ended the history of the non-detection of neutrino in the earth. It will be possible to create a new situation in earth science research. The research results have been published in the British magazine Nature. “KamLAND Liquid” (Kamioka Liquid Scintillator Anti-Neutrino Detector) is a spherical container filled with 1000t of “liquid phosphor” formed of an oily mixture. When neutrinos fly over, they react and emit light, which can be detected by photomultiplier tubes. Northeastern University in Japan