Accessing the hyperfine splitting in highly charged helium-like ions via angle-resolved x-ray spectroscopic analysis

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

Wu, Z.W.^1,2 ; Volotka, A.V.^1,3 ; Surzhykov, A.^4,5 ; Fritzsche, S.^1,6

Helmholtz-Institut Jena, Jena

D-07743, Germany^1

College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou

730070, China^2

Department of Physics, St. Petersburg State University, St. Petersburg

198504, Russia^3

Physikalisch-Technische Bundesanstalt, Braunschweig

D-38116, Germany^4

Technische Universität Braunschweig, Braunschweig

D-38106, Germany^5

Theoretisch-Physikalisches Institut, Friedrich-Schiller-Universität Jena, Jena

D-07743, Germany^6

关键词: Angle-resolved;    Emission lines;    Emitted photons;    Helium-like ion;    Highly charged ions;    Hyperfine splittings;    Linear polarization;    Polarization behavior;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/875/3/022043/pdf
DOI  :  10.1088/1742-6596/875/3/022043

来源: IOP

【 摘 要 】

Synopsis A new scheme is presented for determining the hyperfine splitting of highly charged ions via angle-resolved spectroscopic analysis. In particular, we propose two measurements on the angular distribution and linear polarization of the emission line 1s2p3P1;F = I 1;I;I+1 1s2 1S0;Ff = I of He-like isotopic ions, following the stimulated decay of the 1s2s 1S0;Fi = I level. We find that the angular and polarization behavior of the emitted photons strongly depends on the splitting of the overlapping hyperfine 1s2p3P1;F resonances, which could be a promising "signature" for the hyperfine splitting determination.