Photorecombination of berylliumlike and boronlike silicon ions

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

Bernhardt, D.^1 ; Becker, A.^2 ; Brandau, C.^3,4 ; Grieser, M.^2 ; Hahn, M.^5 ; Krantz, C.^2 ; Lestinsky, M.^3 ; Novotný, O.^2,5 ; Repnow, R.^2 ; Savin, D.W.^5 ; Spruck, K.^1,2 ; Wolf, A.^2 ; Müller, A.^1 ; Schippers, S.^4

Institut für Atom- und Molekülphysik, Justus-Liebig-Universität Gießen, Giessen

35392, Germany^1

Max-Planck-Institut für Kernphysik, Heidelberg

69117, Germany^2

GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt

64291, Germany^3

I. Physikalisches Institut, Justus-Liebig-Universitat Gießen, Giessen

35392, Germany^4

Columbia Astrophysics Laboratory, Columbia University, New York

NY

10027, United States^5

关键词: Electron-ion recombinations;    Heavy-ion storage ring;    Hyperfines;    Measured results;    Metastable levels;    Photorecombination;    Rate coefficients;    Silicon ion;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/875/6/052005/pdf
DOI  :  10.1088/1742-6596/875/6/052005

来源: IOP

【 摘 要 】

Synopsis Absolute rate coefficients for electron-ion recombination of astrophysically relevant Si9+and Si10+ions were measured at a heavy-ion storage ring. Hyperfine quenching of long-lived metastable levels was used for preparing practically pure ground-state beams in the storage ring. From the measured results rate coefficients for recombination of Si9+and Si10+ions in a plasma are derived and represented by simple parameterizations.