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世界上最大、最灵敏的中微子探测器的建造计划上周获得批准。加拿大政府宣布它将拨款3500万加元(合7000万英镑)用于这台探测器的建造,整个工程预计将耗资6100万加元。安装这台探测器的萨德贝里中微子天文台(SNO)将建在北安大略加拿大地盾的地面下千米深处。项目负责人、安大略省金斯敦市女王大学的物理教授阿瑟·麦克康纳说,这个天文台在1995年建成后,由来自加拿大、英国和美国的科学家组成的一个研究集体将在这里探测中微子这种神秘而难以捉摸的亚原子粒子的特性和行为。中微子和夸克及电子一起构成了自然界的基本结构单元。中微子不带电荷,其质量估计在4到22电子伏特之间。自然界中存在的放射性物质(如铀和钍)在其衰变过程中产生少量的中微子,但绝大多数中微子是在恒星内发生的核反应中或在灾变事件(如超新星爆发)中形成的。
The construction of the world's largest and most sensitive neutrino detector was approved last week. The government of Canada announced that it will allocate 35 million Canadian dollars (70 million pounds) for the construction of this detector and the entire project is estimated to cost C $ 61 million. The Sudbury Neutrino Observatory (SNO), which will install the detector, will be built at a depth of 1000 kilometers beneath the Earth's surface at the Canadian shield in North Ontario. Arthur McConner, a project manager and professor of physics at Queen's University in Kingston, Ontario, said that a research group of scientists from Canada, the United Kingdom and the United States will be exploring here after the observatory was completed in 1995 The nature and behavior of this mysterious and elusive subatomic particle. Neutrinos, together with quarks and electrons, form the basic structural unit of nature. Neutrinos are uncharged and their mass is estimated to be between 4 and 22 electron volts. Radioactive materials (such as uranium and thorium) found in nature produce small amounts of neutrinos during their decay, but the vast majority of neutrinos are formed in nuclear reactions within stars or in catastrophic events such as supernova explosions of.