Complete measurements of anisotropic x-ray emission following recombination of highly charged ions

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

Shah, Chintan^1 ; Amaro, Pedro^1 ; Steinbrügge, René^2 ; Beilmann, Christian^1,2 ; Bernitt, Sven^2 ; Fritzsche, Stephan^3 ; Surzhykov, Andrey^4 ; López-Urrutia, José R Crespo^3 ; Tashenov, Stanislav^1

Physikalisches Institut, Universitat Heidelberg, Heidelberg

69120, Germany^1

Max-Planck-Institut für Kernphysik, Heidelberg

69117, Germany^2

Friedrich-Schiller-Universitat Jena, Jena

07743, Germany^3

Helmholtz-Institut, Jena

07743, Germany^4

关键词: Anisotropic plasmas;    Degree of polarization;    Highly charged ions;    Krypton ions;    Measurements of;    Plasma temperature;    X-ray emission;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/635/5/052093/pdf
DOI  :  10.1088/1742-6596/635/5/052093

来源: IOP

【 摘 要 】

We report the first systematic measurement of x-ray emission anisotropies following dielectronic, trielectronic and quadroelectronic recombination into He-like through O-like iron and krypton ions. Using the experimental data we calculated the polarization of the Kα x rays in an anisotropic plasma as a function of the plasma temperature. Unexpectedly, we found that the degree of polarization is dominated by previously neglected trielectronic and quadroelectronic recombination resonances.