Experimental study of the deep-lying dielectronic recombination resonances of 
He-like germanium ions

Zhang, X.; Crespo López-Urrutia, J. R.; Guo, P.; Mironov, V.; Shi, X.; González Martínez, A. J.; Tawara, H.; Ullrich, J.

doi:10.1088/0953-4075/37/11/005

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Experimental study of the deep-lying dielectronic recombination resonances of He-like germanium ions

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Zhang, X.
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

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Crespo López-Urrutia, J. R.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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Guo, P.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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Mironov, V.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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González Martínez, A. J.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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Tawara, H.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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Ullrich, J.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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Citation

Zhang, X., Crespo López-Urrutia, J. R., Guo, P., Mironov, V., Shi, X., González Martínez, A. J., et al. (2004). Experimental study of the deep-lying dielectronic recombination resonances of He-like germanium ions. Journal of Physics B: Atomic, Molecular and Optical Physics, 37(11), 2277-2284. doi:10.1088/0953-4075/37/11/005.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-8BE3-4

Abstract

Dielectronic recombination (DR) for He-like Ge³⁰⁺ through both one-electron–one-photon and two-electron–one-photon (TEOP) stabilization of Li-like doubly excited states was studied with the Heidelberg electron beam ion trap. The DR resonance strength from He-like Ge³⁰⁺ 1s² ¹S₀ to the Li-like Ge²⁹⁺ specific configuration 1s2s² ²S_1/2 was determined to be (2.02 ± 0.2) × 10-20 cm² eV and the total KLL DR resonance strength was determined to be (63.7 ± 6.5) × 10^-20 cm² eV. The experimental results agree well with a theoretical prediction obtained with the configuration interaction Hartree–Fock method.