钨离子能级结构与辐射跃迁特性的相对论理论研究

钨由于其优良的物理化学性质而被选作ITER面向等离子体部件的装甲材料。深入研究钨离子的性质有助于在磁约束核聚变等离子体中监测和控制钨离子杂质流、优化等离子体性能，也有助于理解复杂重原子中的电子关联、相对论和量子电动力学效应。本项目使用MCDF方法和相对论组态相互作用方法重点研究电子关联效应对单电子组态、双电子组态和复杂高轨道角动量多电子组态钨离子的辐射跃迁波长和几率的影响，探索多电子重原子中的电子关联效应的规律；基于相对论组态相互作用方法得到原子数据，针对EBIT和聚变等离子体的特性构造碰撞辐射模型，最后使用MCDF方法计算的收敛波长重新标定理论光谱，并在此基础上提出可用于等离子体参数诊断的跃迁线组。本项目的实施，能更加深入的理解电子关联效应对重离子结构和辐射跃迁特性的影响，得到适用于不同复杂程度的钨离子的电子关联模型，同时将得到一组精确的原子参数，并能为聚变等离子体密度诊断提供帮助。

Tungsten (W) was chosen for the armor material of plasma facing component of ITER due to its excellent properties. Investigations on the transition properties of tungsten are helpful for monitoring and controlling the tungsten impurity influx in the fusion plasma and optimizing the plasma performance. It is also helpful to understand the electron correlation, relativistic and quantum electro-dynamics effects in high Z atoms. The MCDF and relativistic configuration interaction (RCI) method are used to investigate the transition wavelength and probability of single-, double-electron configurations and the complex configurations with many electrons in high angular momentum orbital. The present project emphases on the principle of the electron correlation effect in different tungsten ions. A collisional-radiative model (CRM) will be constructed using the atomic data of W ions by RCI method. The wavelength of the synthetic spectrum obtained from CRM calculation will be re-calibrated by the converged wavelength of MCDF calculation. Finally, the transitions which are sensitive to the electron density and temperature will be proposed as potential diagnostics lines for the future plasma diagnostics application. The electron correlation effects on the structure and transition properties of high Z element will be understood when the project accomplished. The electron correlation models for different complex W ions will be also established. Furthermore, the accurate atomic data of W ions will be obtained which is helpful for the fusion plasma diagnostics.