Related Experiment Video
Updated: Jan 2, 2026
10:17
20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
Published on: July 12, 2017
11.9K
The Second Spectrum of Ytterbium (Yb II)
Summary
This study presents the most comprehensive analysis of the Yb II spectrum, detailing 315 energy levels and classifying over 80% of spectral lines. Excellent agreement between observed and theoretical g-values validates the findings.
Area of Science:
- Atomic Physics
- Spectroscopy
- Rare-Earth Elements
Background:
- The Ytterbium (Yb II) spectrum is complex and requires detailed analysis for fundamental understanding.
- Previous interpretations of rare-earth spectra have been limited in completeness.
Purpose of the Study:
- To provide the most complete interpretation of the Yb II spectrum to date.
- To classify spectral lines and determine energy levels and g-values.
Main Methods:
- Analysis of Yb II spectral lines, including observed Zeeman patterns.
- Application of three coupling schemes: LS, JI JII, and JI LII.
- Theoretical calculations in collaboration with Racah and associates.
Main Results:
- 315 energy levels identified (141 even, 174 odd).
- Over 5000 Yb II lines listed, with 80% classified and 95% of intensity accounted for.
- g-values determined for 258 levels, showing excellent agreement with theoretical predictions.
- Ionization potential derived as 12.17 eV.
Conclusions:
- The study offers the most thorough interpretation of a complex rare-earth spectrum.
- The validated energy levels and g-values provide a robust foundation for atomic physics research.
- The findings confirm the accuracy of theoretical models in describing Yb II.
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