类钴离子精细结构能级和辐射寿命

用全相对论多组态自洽场方法,计算了类钴离子MoⅩⅥ和Fm LⅩⅩⅣ的1s、2s、2p-、2p、3s、3p-、3p、3d-、3d、4s、4p-、4p、4d-、4d、4f-、4f、5s、5p-、5p、5d-、5d轨道的1014个精细结构能级和辐射寿命以及其他各种跃迁参数,能级的计算值和实验值符合得较好.另外,还发现了一些寿命较长的亚稳态能级.     

与闪电过程有关的NII离子能级寿命的理论计算

用相对论多组态DiracFock方法,系统地计算了与闪电过程有关的NII离子2p2,2s2p3,2p3s,2p3p,2p3d组态能级之间的辐射跃迁概率,并由此推算出这些组态的35个能级的寿命.计算中考虑了相对论效应、电子关联、延迟效应等重要贡献.与已有的理论计算比较,目前计算的结果更接近最新实验值.据此,进一步给出了2p3d3F能级寿命新的理论预言值     

类硅离子精细结构能级和辐射寿命

用全相对论多组态自洽场方法,计算了类硅离子的1s、2s、2p-、2p 、3s、3p-、3p、3d-、3d、4s、4p-、4p、4d-、4d、4f-、4f、5s、5p-、5p、 5d-、5d、5f-、5f、5g-、5g、6s、6p-、6p轨道的912个精细结构能级和辐射寿命以及各种跃迁参数.能级的计算值和实验值符合得很好.从计算结果中发现了一些亚稳态能级.     

类磷离子精细结构能级和辐射寿命

用全相对论多组态自洽场方法,计算了9个类磷离子的1s、2s、2p-、2p、3s、3p-、3p、3d-、3d、4s、4p-、4p、4d-、4d、4f-、4f、5s、5p-、5p、5d-、5d、5f-、5f、5g-、5g、6s、6p-、6p轨道的2309个精细结构能级和辐射寿命以及各种跃迁参数。能级的计算值和实验值符合得很好。同时,我们还发现了一些亚稳态能级。     

类铟钡离子辐射光谱的相对论识别

用全相对论多组态自洽场方法,计算了高离化类铟钡离子的1s、2s、2p-、2p、3s、3p-、3p、3d-、3d、4s、4p-、4p、4d-、4d、4f-、4f、5s、5p-、5p、5d-、5d、5f-、5f、5g-、5g、6s、6p-、6p、6d-、6d、6f-、6f、6g-、6g、7s、7p-、7p、7d-、7d、7f-、7f、7g-、7g轨道的3090个精细结构能级和辐射寿命以及各种跃迁参数.波长的计算值和实验值符合得较好.另外还发现了一些辐射寿命较长的亚稳态能级.     

ZnⅩⅨ离子3d2-3p3d跃迁的多组态相对论理论计算

用多组态相对论理论对ZnⅩⅨ离子3s2,3s3p,3p2,3s3d,3p3d,3d2,3s4s,3s4p,3s4f组态能级结构进行了计算与分析.在已有实验工作的基础上,运用参数拟合方法计算了ZnⅩⅨ离子上述组态能级,获得了能级结构参数的最佳计算值.由这些参数值进一步预测计算了ZnⅩⅨ离子n=3Complex中3d2-3p3d组态能级跃迁的谱线波长,振子强度和跃迁概率.     

与闪电过程有关的NⅡ离子能级寿命的理论计算

用相对论多组态Dirac-Fock方法，系统地计算了与闪电过程有关的NⅡ离子2p^2,2s2p^3,2p3s,2p3p,2p3d组态能级之间的辐射跃迁概率，并由此推算出这些组态的35个能级的寿命，计算中考虑了相对论效应，电子交联，延迟效应等重要贡献，与已有的理论计算比较，目前计算的结果更接近最新实验值，据此，进一步给出了2p3d^3F能级寿命新的理论预言值。     

稀有类铥铋离子辐射光谱的相对论识别

用全相对论多组态自洽场方法,计算了高离化类铥铋原子BiXV的1s、2s、2p-、2p、3s、3p-、3p、3d-、3d、4s、4p-、4p、4d-、4d、4f-、4f、5s、5p-、5p、5d-、5d、5f-、5f、5g-、5g、6s、6p-、6p、6d-、6d、6f-、6f、6g-、6g、7s、7p-、7p、7d-、7d、7f-、7f、7g-、7g、8s、8p-、8p、8d-、8d轨道的2249个精细结构能级和辐射寿命以及其他各种跃迁参数.能级和波长的计算值和实验值符合得好.另外还发现了一些辐射寿命较长的亚稳态能级.     

类铟钡离子辐射光谱的相对论识别

用全相对论多组态自洽场方法，计算了高离化类铟钡离子的1s、2s、2p_、2p、3s、3p_、3p、3d_、3d、4s、4p_、4p、4d_、4d、4f_、4f、5s、5p_、5p、5d_、5d、5f_、5f、5g_、5g、6s、6p_、6p、6d_、6d、6f_、6f、6g_、6g、7s、7p_、7p、7d_、7d、7f_、7f、7g_、7g轨道的3090个精细结构能级和辐射寿命以及各种跃迁参数。波长的计算值和实验值符合得较好。另外还发现了一些辐射寿命较长的亚稳态能级。     

GeⅩⅪ-SeⅩⅩⅢ离子n=3,Δn=0跃迁谱线和振子强度的计算

用HFR方法对CaⅨ-KrⅩⅩⅤ离子3s2,3s3p,3s3d,3p2组态能级结构进行了理论计算.在已有实验研究的基础上,通过分析离子能级沿等电子序列的变化规律,运用最小二乘拟合方法预言计算了GeⅩⅪ-SeⅩⅩⅢ离子3s2,3s3p,3s3d,3p2组态14条精细结构能级值.在此基础上,进一步计算了GeⅩⅪ-SeⅩⅩⅢ离子3s2-3s3p,3s3p-3s3d和3s3p-3p2跃迁的23条谱线波长和相应的振子强度.计算结果与已有的实验值十分吻合,波长的最大不确定度为0.008 nm.     

Lifetime and transition probability determination in xenon ions

Radiative lifetimes have been calculated for 15 levels of Xe VII belonging to the configurations 5s5p, 5p², 5s5d, 5s6s, 5p5d, 4f5p, 5p5d and 5s5f and for 4 levels of the 5p and 5d configurations of Xe VIII. A relativistic Hartree-Fock approach including core-polarization effects, on the one hand, and a purely relativistic multiconfiguration Dirac-Fock method, on the other hand, have been used for the calculations. The accuracy of the present set of results has been assessed through comparisons with radiative lifetime measurements obtained by beam-foil spectroscopy. A good agreement between theory and experiment is observed for most of the levels. A new set of transition probabilities is proposed for 169 transitions of Xe VII and 45 transitions of Xe VIII.     

Lifetime measurements of higher s- and d-levels in the Na I spectrum

The radiative lifetimes of the 5s, 7s, 8s, 9s and of the 4d, 6d, 7d, 8d, and 9d levels of sodium have been measured by time resolved observations of the fluorescence radiation after stepwise excitation by two pulsed dye lasers.     

Study on the n = 5 complex transitions for ions Nd XIII-Sm XV in Cd I isoelectronic sequence

The energy levels of the n = 5 complex configuration 5s2, 5s5p, 5s5d and 5p2 were computed for Cd I isoelectronic sequence ions from I VI to Sm XV by Hartree-Fock with relativistic corrections (HFR) method. By analyzing the variation of difference deltaE between energy levels calculated by HFR method and the experimental values with Z(c) along this isoelectronic sequence, the authors put forward a new fitting formula for generalized-least-square-fit (LSF) calculation. Using this formula and the FORTRAN programme designed by us, the energy levels of configurations mentioned above were calculated. The unknown energy levels of configuration 5s2 , 5s5p, 5s5d and 5p2 for ions from Nd XIII-Sm XV were predicted by extrapolation (or interpolation). Also, the wavelengths and HFR probabilities of transition 5s2-5s5p, 5s5p-5p2 and 5s5p-5s5d were computed. The calculated energy levels and wavelength results are in good agreement with corresponding experimental data reported in the references.     

Energies,Wavelengths, and Transition Probabilities in Sc XIII

Physics of Atomic Nuclei - The fine-structure energy levels and lifetimes are calculated for the lowest 218 levels of the 2s22p5, 2s2p6, 2s22p43s, 2s22p43p, 2s22p43d, 2s2p53s, 2s2p53p, 2s2p53d,...     

Revised and extended analysis of Br VI

The spectrum of five times ionized bromine (Br VI) has been studied in the 150–2060 Å wavelength region. The spectrum was recorded on a 3-m normal incidence vacuum spectrograph at the Antigonish laboratory (Canada) and 6.65-m grazing incidence spectrograph at the Zeeman laboratory (Amsterdam) using a triggered spark light source. The ground configuration of Br VI is 3d¹⁰4s² and the excited configurations 3d¹⁰4s (4p+5p+6p+7p+4f+5f)+3d¹⁰4p4d+3d¹⁰4p5s in the odd parity system and 3d¹⁰4s (4d+5d+6d+5s+6s+7s+8s+5g+6g)+3d¹⁰4p² in the even parity system have been studied. Relativistic Hartree–Fock (HFR) and least squares fitted (LSF) parametric calculations were used to interpret the observed spectrum. Sixty-eight levels of Br VI have now been established, out of which 28 are new levels. Two previously reported levels viz. 4p4d ¹D₂ and ³F₄ were revised. Among one hundred and fifty-eight spectral lines, 69 are newly classified. The accuracy of our wavelength measurements for sharp and unblended lines is ±0.005 Å. The value of the ionization potential has been determined as 704850±200 cm^?1 (87.390±0.025 eV).     

钯原子谱线的分支比测量

运用钯元素空心阴极灯和高分辨率光栅单色仪测量了钯原子4d⁹6s和4d⁹5d组态的7个偶宇称能级的发射光谱,确定了这些能级向4d⁹5p组态能级跃迁产生的15条谱线的跃迁分支比.本文大部分结果是对文献中钯元素原子相关光谱参数的重要修正. 关键词： 原子光谱 钯原子 分支比 空心阴极灯