类镍X光激光研究中的原子参数讨论
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摘要: 对可能作为X光激光工作介质的47≤Z≤75及Z=41、79各元素的类镍离子, 系统计算了能级结构及各种过程参数。通过对已有部分实验数据的比较、拟合, 给出了对电子关联校正过的激光波长数据。分析了长波长与短波长激光线振子强度随电荷数的变化规律及其相互竞争关系。以类镍钕离子为例, 分析了粒子数反转及谱线放大对各种过程参数的条件要求并讨论了其它几条重要谱线不能产生增益的原因。Abstract: For Ni-like ions with nuclear charge Ｚ from 47 to 75 and Ｚ =41, 79 elements, which are suitable for use as the actuating medium in X-ray laser research,energy structures and atomic process parameters are calculated systematically. By comparing and fitting to some experimental results, the calculated wavelengths are corrected, and experimental accuracy has been obtained for all the ions considered. The dependence of laser line oscillator strength on nuclear charge has been illustrated. According to the parameters of Ni-like Nd ions, an explanation is given about why some important spectrum lines can't be amplified．
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Key words:
- x-ray laser /
- ni-like ions /
- atomic parameters
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