用B-Splines有限基矢集计算强电场中锂原子的能级

讨论了电场中碱金属原子能级的Ｂ－Ｓｐｌｉｎｅｓ（基样条）计算方法，并采用基样条作为基矢集组成波函数，计算了０～４．５ｋＶ·ｃｍ－１电场中锂原子能级结构．结果与实验符合得很好，这表明基样条方法对强场中原子能级计算具有极大的优越性．根据计算结果，本文还对原子实和外电场对原子能级的影响作了讨论     

强电,磁场中的原子

简要地叙述了强电场和强磁场中的原子物理问题的研究进展，着重介绍了原子电场电离的实验结果和理论分析，对称性对磁场中原子行为的影响，以及与经典混沌和量子谱相关的共振现象。     

Phase shift of the population oscillation and population trapping

Using our recently developed time-dependent multilevel approach, we have calculated the phase shift of the population oscillation of the excited potassium atom in frequency-modulated fields when the modulation amplitude is suddenly changed. The numerical results are in good agreement with the measurements. A new way of realizing population trapping is suggested.     

氢负离子基态电子关联能的精确计算

用Ｓｌａｔｅｒ基、Ｂ样条基和修正的Ｓｌａｔｅｒ基［１］计算了氢负离子基态的电子关联能，比较了三种基的计算结果，分析了双电子体系波函数的特点。并用修正的Ｓｌａｔｅｒ基得到了目前组态相互作用方法所能得到的精度最高的结果。     

Quantum Spectra of Hydrogen Atoms in Various Magnetic Fields with the Closed Orbit Theory

The quantum spectra of hydrogen atoms in various magnetic fields have been calculated with the closed orbit theory.The magnitude of the magnetic field decreases from 5.96 T to 0.56 T with a step of 0.6T.We demonstrate schematically that the closed orbits disappear with the decrease of the magnitude of the magnetic field when the corresponding finite resolution of experiment is fixed.This may give us a good way to control the shape and the number of the closed orbits in the system,and thus to control where a peak should exist in the Fourier transformation of the quantum spectra.     

强磁场中氢原子自离化态的能级及宽度

使用Bsplines与复坐标旋转相结合的方法计算了均匀外磁场(2.35×10~6≤B≤1.175×10~4T)中氢原子│m│=0—5,偶宇称和奇宇称自离化态的能级和宽度.并与已有的结果作了比较.分析了共振态能级位置和宽度与态的宇称、磁量子数│m│及磁场强度的关系.结果表明:Bsplines与复坐标旋转方法相结合可以有效地用于强外场中原子自离化态的计算. 关键词：     

囚禁于巴基球内的原子的里德堡特性

通过非线性变换和特殊设计结点的B样条函数研究计算了囚禁于巴基球内的氢原子里德堡能级结构和振子强度 .结果表明 ,巴基球等效势阱深度可以有选择的影响和改变里德堡原子的特性 ;囚禁原子拥有很多自由原子所没有的奇特性质. Rydberg energy levels and oscillator strength of endohedrally confined H atom have been calculated by using a nonlinear algebraic mapping technique and B-spline method.The boundary conditions are conveniently satisfied with a specially designing knot sequence.Our results show that endohedral can selectively alter the properties and energy levels of Rydberg atoms, and such atoms possess some properties and behaviours which are not previously met or studied in free systems.     

氦原子关联能的B样条计算

用B样条方法计算了氦原子基态的关联能，与Slater基作了比较，分析了B样条方法用于电子关联计算的可行性及优缺点．结果表明B样条方法可以有效地用于电子关联的计算． 关键词：     

B splines有限基矢集用于计算磁场中氢原子能级

用Ｂ ｓｐｌｉｎｅｓ有限基方法计算了磁场（０＜Ｂ≤４．７×１０⁸Ｔ）中氢原子的基态和多个激发态的能级。对Ｒ?ｓｎｅｒ等及Ｉｖａｎｏｖ所算的能级范围做了补充和扩展，所得结果与其它理论方法已有的结果符合得很好，进一步显示了Ｂ ｓｐｌｉｎｅｓ有限基方法在原子外场效应计算中是一种强有力的方法。 关键词：