Autoionization Resonances in the Eu I Absorption Spectrum and a New Determination of the Ionization Potential

Autoionization Resonances in the Eu I Absorption Spectrum and a New Determination of the Ionization Potential

The absorption spectrum of europium has been studied at high resolution in the wavelength region between 2200 and 2100 Å. Two Rydberg series were found converging towards the 9S4 and 7S3 levels of the configuration 4f76s in Eu II. The first series is perturbed near the series limit and the second sh...

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Veröffentlicht in:Proc. R. Soc. (London), Ser. A, v. 342, no. 1628, pp. 149-156 Ser. A, v. 342, no. 1628, pp. 149-156, 1975-02, Vol.342 (1628), p.149-156
Hauptverfasser: Smith, G., Tomkins, F. S.
Format: Artikel
Sprache:eng
Schlagworte:
Absorption spectra
AUTOIONIZATION
BOUNDARY CONDITIONS
ELECTRONIC STRUCTURE
Europium
EUROPIUM- IONIZATION POTENTIAL
Ionization
Ionization potentials
N60200 -Physics (Atomic & Molecular)-Atomic & Molecular Properties
Quantum numbers
RESONANCE
RYDBERG CORRECTION
Rydberg series
S STATES
Series convergence
Wavelengths
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Zusammenfassung:The absorption spectrum of europium has been studied at high resolution in the wavelength region between 2200 and 2100 Å. Two Rydberg series were found converging towards the 9S4 and 7S3 levels of the configuration 4f76s in Eu II. The first series is perturbed near the series limit and the second shows strong autoionization features. A value of 45734.9 ± 0.2 cm-1 is deduced for the first ionization limit.
ISSN:1364-5021
0080-4630
1471-2946
2053-9169
DOI:10.1098/rspa.1975.0017