【摘要】 本文使用相对论组态相互作用方法计算了0.1E₁≤kT_e≤10E₁（E₁是类钠钨离子的第一电离能E₁=7129.5 eV）温度范围内类氖W⁶⁴⁺离子基态双电子复合（DR）速率系数.类氖W⁶⁴⁺离子基态DR过程需要考虑（2s2p）⁷3ln′l′,（2s2p）⁷4l4l′以及（2s2p）⁷4l5l′双激发自电离组态.对于（2s2p）⁷3ln′l′双激发自电离组态,轨道角量子数l′>8的（2s2p）⁷3ln′l′组态对双电子复合速率系数的贡献可以忽略不计;（2s2p）⁷3ln′l′组态双电子激发自电离态的高里德堡态对双电子复合速率系数的贡献满足n′^-3组态-组态外推法.对细致计算得到的类氖W⁶⁴离子基态DR总速率系数进行了拟合,得到W⁶⁴⁺离子基态在0.1E₁≤kT_e≤10E₁温度范围内的总DR速率系数随电子温度变化的经验公式.更多还原

【Abstract】 The dielectronic recombination（DR） rate coefficient for neon-like tungsten in the ground state 2s²p⁶ has been performed using relativistic configuration interaction（RCI） method over a wide temperature ranging from 0.1E₁ to 10E₁（E₁= 7129.5 eV）,where E₁ is the ionization energy of the Na-like tungsten. The results show,the DR process for ground state of W⁶⁴⁺ need consider（2s2p）⁷3ln’l’, （2s2p）⁷4l4l’ and（2s2p）⁷ 4l5l’ autoionizing doubly excited configurations.The contribution of （2s2p）⁷3ln’l’ complex with l’>8 are found to be negligible.The contribution of high Rydberg states of （2s2p） ⁷ 3ln’l’ complex obeys the complex-complex n’^-3 extrapolation.On the basis of the detail level-by-level results,a general analytic formula for the total DR rate coefficients for W⁶⁴⁺ has been constructed between 0.1E₁ and 10E₁.更多还原