论文标题
相对论磁偶极转变中硫的绝对测量
Absolute measurement of the relativistic magnetic dipole transition in He-like sulfur
论文作者
论文摘要
我们已经对1S2S 3 S1 $ \ rightarrow $ 1S 2 1 S0相对论磁偶极偶极转变进行了第一个绝对无参考的测量。高电量的S离子由电子环旋次共振离子源提供，并用高精度的双晶体光谱仪分析X射线。获得了2430.3685（97）EV的过渡能，并与大多数高级结合的状态量子电动力学计算进行了比较，从而提供了对中型Z物种中两电子QED效应和精度原子结构方法的重要测试。由于这种过渡的自然线宽极为狭窄，并且由于该能量的光谱仪的大量分散，还进行了互补的研究，评估了在过渡能量分析中不同硅晶晶体原子型模型的影响。我们发现对用于确定过渡能的模型没有显着依赖性。
We have made the first absolute, reference-free measurement of the 1s2s 3 S1 $\rightarrow$ 1s 2 1 S0 relativistic magnetic dipole transition in He-like sulfur. The highly-charged S ions were provided by an electron-cyclotron resonance ion source, and the x rays were analysed with a high-precision double crystal spectrometer. A transition energy of 2430.3685(97) eV was obtained, and is compared to most advanced bound state quantum electrodynamics calculations, providing an important test of two-electron QED effects and precision atomic structure methods in medium-Z species. Thanks to the extremely narrow natural linewidth of this transition, and to the large dispersion of the spectrometer at this energy, a complementary study was also performed evaluating the impact of different silicon crystal atomic form factor models in the transition energy analysis. We find no significant dependence on the model used to determine the transition energy.
