应用相对论理论(Dirac)来计算C、O、S、Se、Te、Sm和Pu原子的相对论和非相对论的电子状态和能量,比较相对论和非相对论的能量差别后得到:如果以O原子的相对论和非相对论能量差为1,则S、Se、Sm和Pu原子的相对论和非相对论能量差分别为17.5、479、6 781和46 166.就钚和氧相比,质量的相对论效应增加46 166倍.Pu的相对论的和非相对论的能量的差占总能量的8.72%,所以对重元素,应用相对论的计算是很必要的.%The present work devotes to the calculation of relativistic and non-relativistic electronic state and energy for atoms C, O, S, Se, Te, Sm and Pu. In comparison between the relativistic and non-relativistic electronic energy, it is concluded that ff energy difference of relativistic and non-relativistic electronic energy for O atom is supposed as unit, then there will be 17.5,479,6 781 and 46 166 for S,Se,Sm and Pu ,respectively. The energy difference of relativistic and non-relativistic electronic energy for Pu is about 8.72 ％ of its total energy. Therefore,it is quite necessary to calculate heavy atoms using relativistic theory.
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