Electron-Impact Ionization and Recombination of Highly Charged Ions

Müller, Alfred

doi:10.1007/978-3-642-58580-7_12

Cited by 5 publications

(2 citation statements)

References 39 publications

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“…The experimental data points in the corresponding energy range were excluded from the fit in figure 2. By fitting the Rydberg formula to the tabulated n = 4, 5, 6 resonance positions the following quantum defects and series limits were obtained: for the 2pnp 3 D series µ = 0.282( 2) and E ∞ = 26.545(3) eV, for the 2pnp 3 P series µ = 0.180 (1) and E ∞ = 26.536 (1) eV. These values for the series limits are up to 25 meV higher than the spectroscopic values.…”

Section: Fit Of Individual Resonancesmentioning

confidence: 99%

“…By extending photoionization (PI) experiments to include ions in addition to atoms, systematic studies of PI along isoelectronic sequences become feasible. The sequence of berylliumlike ions has already received much attention in, for example, electron impact ionization or electron-ion recombination studies [1]. Beryllium-like ions on the one hand are relatively simple systems, so that one may hope to gain a detailed understanding of the observed atomic processes.…”

Section: Introductionmentioning

confidence: 99%

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Photoionization studies of the Bvalence shell: experiment and theory

Schippers

Müller

McLaughlin

et al. 2003

J. Phys. B: At. Mol. Opt. Phys.

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We have investigated L-shell photoionization (PI) of 1S ground-state and 3Po metastable states of the Be-like ion, B+, in the photon energy range 22.4–31.3 eV, at an experimental energy resolution of 25 meV. Absolute PI cross sections have been measured using a photon–ion merged-beams arrangement at the Advanced Light Source. Detailed calculations using the semi-relativistic Breit–Pauli R-matrix approach suggest a fraction of 29% of metastable ions in the primary beam of the experiment. Excellent agreement is observed between the theoretical predictions and the experimental high-resolution PI cross sections. The present results are compared with earlier experimental and theoretical work. The cross section for PI of B+ ground-state ions can be very well described by an analytic formula derived from quantum defect theory.

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Section: Fit Of Individual Resonancesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Photoionization studies of the Bvalence shell: experiment and theory

Schippers

Müller

McLaughlin

et al. 2003

J. Phys. B: At. Mol. Opt. Phys.

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Progress in stored ion beam experiments on atomic and molecular processes

Wolf¹,

Buhr²,

Grieser³

et al. 2007

TCP 2006

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Progress in stored ion beam experiments on atomic and molecular processes

et al. 2006

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Stored fast ion beams in atomic and molecular collision experiments are discussed with an emphasis on electron-ion interactions at low relative energies. Recent progress was obtained in electron collision spectroscopy using an electroncooled stored ion beam and a separate electron target in the same storage ring; from a cryogenic photocathode, electron beams with internal temperatures of 5 to 10 K were produced. Results are presented for dielectronic recombination resonances, resolving the hyperfine structure of stored lithiumlike scandium ions and obtaining precise results for the fine structure splitting of these ions, and for ro-vibrational resonances in the recombination of electrons with hydrogen molecular ions, revealing sharp structures down to 2 meV. An overview of the cryogenic storage ring (CSR) project in Heidelberg is given.

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Electron-Impact Ionization and Recombination of Highly Charged Ions

Cited by 5 publications

References 39 publications

Photoionization studies of the Bvalence shell: experiment and theory

Photoionization studies of the Bvalence shell: experiment and theory

Progress in stored ion beam experiments on atomic and molecular processes

Progress in stored ion beam experiments on atomic and molecular processes

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Electron-Impact Ionization and Recombination of Highly Charged Ions

Cited by 5 publications

References 39 publications

Photoionization studies of the B valence shell: experiment and theory

Photoionization studies of the B valence shell: experiment and theory

Progress in stored ion beam experiments on atomic and molecular processes

Progress in stored ion beam experiments on atomic and molecular processes

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Product

Resources

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Photoionization studies of the Bvalence shell: experiment and theory

Photoionization studies of the Bvalence shell: experiment and theory