类氢离子Mg11+, Al12+光谱参数的理论计算及在温度诊断中的应用
Calculation of spectroscopic parameters for H-like ions Mg11+, Al12+ and application to temperature diagnosis
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摘要: 采用“多功能相对论原子结构计算程序”GRASP2(1992),分别计算了类氢离子Mg11+，Al12+能级之间电偶跃迁(E1)的波长、几率和振子强度，其中跃迁波长值与实验值相吻合。充分利用计算结果，采用等电子线率法对文献[4]的谱线强度比测温实验进行理论上的探讨，即利用原子序数相差不大(D Z= 1, 2)的两种示踪原子相同离化态的同种跃迁谱线进行电子温度诊断，以期望提高测温精度。Abstract: The wavelengths, weighted oscillator strength, Einstein transition coefficients for H-like ions Mg11+, Al12+ were calculated by using the General-purpose Relativistic Atomic Structure Program. The results show that the wavelengths are in good agreement with the experimental data available. In addition, making full use of the results, our present work uses the isoelectronic line ratio measurement to improve the temperature diagnosis method of reference, namely, utilizes the alike spectral line pair of the same ionized state of two labelled atoms with adjacent atomic numbers (D Z= 1, 2) to measure the electronic temperature, for obtaining accurate results of the electronic temperature.
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Key words:
- h-like ions /
- mg11+ /
- al12+ /
- transition spectrum /
- temperature diagnosis
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