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Electron-impact-ionization measurements using hyperfine-assisted state preparation of ground-state berylliumlike sulfur

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Grieser,  Manfred
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Krantz,  Claude
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Repnow,  Roland
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Wolf,  Andreas
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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引用

Hahn, M., Bernhardt, D., Grieser, M., Krantz, C., Lestinsky, M., Müller, A., Novotný, O., Repnow, R., Schippers, S., Wolf, A., & Savin, D. (2012). Electron-impact-ionization measurements using hyperfine-assisted state preparation of ground-state berylliumlike sulfur. Physical Review. A, 85(4):, pp. 1-4. doi:10.1103/PhysRevA.85.042713.


引用: https://hdl.handle.net/11858/00-001M-0000-000F-9F0D-6
要旨
We have measured electron impact ionization (EII) of the beryllium-like ion S12+. The use of an isotopically pure A=33 beam of S12+ ions is established as a method to eliminate all metastable levels, including the extremely long-lived metastable level 2s2p3 P0, which, for this isotope, decays by hyperfine-induced radiative transitions. The energy dependence and absolute size of the EII cross section were measured from the resulting pure ground-state population at energies from below the threshold at ≈ 652.2 eV up to 3000 eV. These data provide an experimental benchmark for theory.