AI 中文总结
研究首次对Mn III进行理论发射线研究，通过精确计算得出相关原子数据和线发射率比，发现特定禁戒线对温度和密度敏感，碰撞辐射模型得出发射率线比，某些线对密度敏感，检测其或能得出宇宙Mn丰度。
AI 中文摘要
我们首次对Mn III进行了理论发射线研究，将其作为物理条件和锰丰度的潜在决定因素。计算了一组Mn III线的原子数据和线发射率比作为温度-密度诊断。对先前未研究的Mn III跃迁的电子碰撞激发进行了精确的相对论Breit-Pauli R矩阵计算。选定的禁戒线在H II区（如超新星遗迹）的星云条件下对温度和密度敏感。耦合通道R矩阵计算包括波函数展开，涉及38个Mn III能级。获得了这些能级间703个禁戒跃迁的碰撞强度和麦克斯韦平均速率系数。通过碰撞辐射模型利用计算出的碰撞强度和辐射衰变A值得出发射率线比。基于当前分析，某些[Mn III]线预计对密度敏感，检测这些线还可得出宇宙中Mn相对于其他元素的丰度。
英文摘要
We present the first theoretical emission-line study of Mn III as potential determinant of physical conditions and manganese abundance. We compute atomic data for a set of Mn III lines and line emissivity ratios as temperature-density diagnostics. Accurate relativistic Breit-Pauli R-matrix calculations have been carried out for electron impact excitation of Mn III transitions that have not been previously studied. Selected forbidden lines are shown to be sensitive to temperature and density under nebular conditions in H II regions such as SNRs. The coupled channel R-matrix calculations include a wavefunction expansion that includes 38 levels of Mn III dominated by the ground and first excited electronic configurations $3d^5$ and $3d^44s$. Collision strengths for all 703 forbidden transitions among those levels, and Maxwellian averaged rate coefficients are obtained. A collisional-radiative model yields emissivity line ratios using calculated collision strengths and radiative decay A-values. Based on the present analysis, certain [Mn III] lines are predicted to be sensitive to density and/or in the typical nebular range. The detection of those lines could also yield cosmic Mn abundance relative to other elements.
Comments5 pages, 2 figures, 3 tables (Accepted 2026 July 07. Received 2026 July 07; in original form 2026 June 17 )
