SYSTEMATIC CALCULATIONS OF ENERGY LEVELS ANDRADIATIVE RATES OF C-LIKE IONS WITH Z=13-36 USING AN COM

• 作 者: J.Yan K.Wang D.F.Li H.T.Liu X.Y.Han B.Duan C.Y.Li J.G.Li
• 机 构: InstituteofAppliedPhysicsandComputationalMathematics,Beijing100088,China
• 出 处: 第五届全国计算原子与分子物理学术会议
• 发表日期: 2014年7期

In the present work,we report the energy levels,and electric dipole,magnetic dipole,electric quadrupole and magnetic quadrupole transition properties for 46 levels of the 2s22p2,2s2p3,2p4,2s22p3s,2s22p3p,and 2s22p3d configurations in the C-like ions with 13≤Z≤ 36,in an effort to provide a complete,self-consistent and accurate dataset.We employ a combined relativistic configuration interaction(RCI)and many-body perturbation theory(MBPT)approach implemented in the FAC code[1],in which both nondynamic and dynamic correlations can be well accounted for.Extensive comparisons with available observations and other systematic calculations show the present MBPT results are highly accurate:for level energies,uncertainties are less than 0.2％for most levels and within 0.5％for all levels;for transition rates,accuracies are better than 10％for a majority of transitions.As an example,Figure 1 shows the differences of present calculated energies relative to the observed values from the NIST database[2] for the lowest four excited states of 2s22p2 configuration along the isoelectronic sequence.The present dataset can be used reliably for many purposes,such as the line identification of observed spectra,the modeling and diagnostics of astrophysical and fusion plasmas.