Absolute radiative and Auger transition rates of K-shell excited few-electron iron ions

29th International Conference on Photonic, Electronic, and Atomic Collisions

Steinbrügge, R.^1 ; Bernitt, S.^1 ; Rudolph, J.K.^1 ; López-Urrutia, J.R. Crespo^1

Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, Heidelberg

69117, Germany^1

关键词: Absolute measurements;    Electron beam ion traps;    Experimental parameters;    K-shell transitions;    Prominent features;    Synchrotron source;    Theoretical calculations;    X ray fluorescence;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/635/9/092146/pdf
DOI  :  10.1088/1742-6596/635/9/092146

来源: IOP

【 摘 要 】

The iron Kα lines are among the most prominent features in the x-ray spectra of many celestial sources. However, transition rates used to model these spectra were only known by theoretical calculations. Here we present an absolute measurement of iron K-shell transition rates for Li-like to C-like iron ions. These ions were created with an electron beam ion trap and excited with x rays from the PETRA III synchrotron source. Measuring x-ray fluorescence and Auger decay simultaneously allows to determine absolute decay rates independent of most experimental parameters.