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作为一种金属,钚却不能被磁铁吸引,这个现象已经困惑了科学家几十年了。最近,研究人员可能发现了钚“失踪的磁力”(研究发表于2015年7月10日《Science Advances》上)。由Marc Janoschek领导的洛斯阿拉莫斯国家实验室发现了钚原子周围隐藏的电子。他们说这一发现可能有助于更精准地预测和优化新材料的属性。原子基础:电子在壳内(也叫轨道)围绕原子核旋转。每个轨道都有可容纳的最大电子数。普通金属原子的最外层轨道电子数是固定的,例如,铜最外层有一个电子,铁最外层有两个电子。原子在没有任何外加能
As a metal, plutonium can not be attracted by magnets, a phenomenon that has puzzled scientists for decades. Recently, researchers have discovered plutonium “missing magnetism” (study published on July 10, 2015, “Science Advances”). The Los Alamos National Laboratory, led by Marc Janoschek, discovered the hidden electrons around the plutonium atoms. They say this finding may help to predict and optimize more accurately the properties of new materials. Atomic Basics: Electrons rotate around the nucleus in the shell (also called the orbit). Each track has the maximum number of electrons it can hold. Ordinary metal atoms in the outermost orbital electron number is fixed, for example, the outermost copper has an electron, the outermost two iron electrons. Atoms without any extra energy