The average positron lifetimes was explained by a proposed model, in which the shifting of Fermi-level affects the defect ionization and consequent positron trapping at defects site.
建立了一种用于解释正电子寿命谱测量结果的模型，该模型中费米能级位置的改变可影响缺陷的电离以及正电子在缺陷位置的被捕获。
Based on relativity quantum defect theory of ions energy levels, an expression of ionization energies of helium-like ions has been given.
依据离子能级的相对论量子亏损理论，给出了类氦离子电离能的一种表达式。
We develop a new D. C. ionization static eliminator which can overcome above - mentioned defect and are of the properties of low watt consumption, high efficiency and reliability.
作者研制了一种能克服上述缺陷，并具有低功耗、高效率、安全可靠等特性的直流离子静电消除器。
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