Resonance induced population transfer of Fe XVII ions in plasma environment

30th International Conference on Photonic, Electronic, and Atomic Collisions

Wu, Chensheng^1,2 ; Gao, Xiang^1

Beijing Computational Science Research Center, Beijing

100193, China^1

Department of Engineering Physics, Tsinghua University, Beijing

100084, China^2

关键词: Dynamic resonances;    Emission lines;    Intensity ratio;    Ne-like;    Oscillator strengths;    Plasma environments;    Population transfer;    X-ray free electron lasers;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/875/3/022011/pdf
DOI  :  10.1088/1742-6596/875/3/022011

来源: IOP

【 摘 要 】

Synopsis We resolve the discrepancy between the existing theoretical oscillator strengths and the recent X-ray free electron laser (XFEL) experiment for the intensity ratio between two of the strongest emission lines from Ne-like Fe XVII (Fe16+) ion. Our study shows that, by considering the dynamic resonance induced population transfer between Fe XVII and Fe XVI (Fe15+) ions, which coexist in the XFEL experiment, we are able to successfully resolve this difference in theory and ex-periment. Further experimental works are suggested for a more detailed understanding of the dynamic resonance processes for ions under the plasma environment.