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A Critical Compilation of Energy Levels, Spectral Lines, and Transition Probabilities of Singly Ionized Silver, Ag II.

Kramida A - J Res Natl Inst Stand Technol (2013)

Bottom Line: Eigenvector compositions and level designations are found in two alternate coupling schemes.Some of the older work is found to be incorrect.A revised value of the ionization energy, 173283(7) cm(-1), equivalent to 21.4844(8) eV, is derived from the new energy levels.

View Article: PubMed Central - PubMed

Affiliation: National Institute of Standards and Technology, Gaithersburg, MD 20899.

ABSTRACT
All available experimental measurements of the spectrum of the Ag(+) ion are critically reviewed. Systematic shifts are removed from the measured wavelengths. The compiled list of critically evaluated wavelengths is used to derive a comprehensive list of energy levels with well-defined uncertainties. Eigenvector compositions and level designations are found in two alternate coupling schemes. Some of the older work is found to be incorrect. A revised value of the ionization energy, 173283(7) cm(-1), equivalent to 21.4844(8) eV, is derived from the new energy levels. A set of critically evaluated transition probabilities is given.

No MeSH data available.


Relative deviations of wave numbers measured by Rasmussen [4] from Ritz wave numbers based on measurements of Kalus et al. [1]. The smooth curve is a cubic polynomial that fits the data points.
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f1-jres.118.009: Relative deviations of wave numbers measured by Rasmussen [4] from Ritz wave numbers based on measurements of Kalus et al. [1]. The smooth curve is a cubic polynomial that fits the data points.

Mentions: Rasmussen specified the uncertainty of his wavelength measurements to be about 0.01 Å. He listed the wavelengths rounded off to two places after the decimal point. However, his listed wave numbers are given with higher precision. Comparison of these wave numbers with the Ritz values based mainly on the FTS measurements of Kalus et al. [1] reveals that they have a relative statistical uncertainty Δσ/σ = 2.0×10−6 and a systematic shift smoothly varying from +1 part in 106 at 18000 cm−1 to +4 parts in 106 at 33000 cm−1 (see Fig. 1).


A Critical Compilation of Energy Levels, Spectral Lines, and Transition Probabilities of Singly Ionized Silver, Ag II.

Kramida A - J Res Natl Inst Stand Technol (2013)

Relative deviations of wave numbers measured by Rasmussen [4] from Ritz wave numbers based on measurements of Kalus et al. [1]. The smooth curve is a cubic polynomial that fits the data points.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4487320&req=5

f1-jres.118.009: Relative deviations of wave numbers measured by Rasmussen [4] from Ritz wave numbers based on measurements of Kalus et al. [1]. The smooth curve is a cubic polynomial that fits the data points.
Mentions: Rasmussen specified the uncertainty of his wavelength measurements to be about 0.01 Å. He listed the wavelengths rounded off to two places after the decimal point. However, his listed wave numbers are given with higher precision. Comparison of these wave numbers with the Ritz values based mainly on the FTS measurements of Kalus et al. [1] reveals that they have a relative statistical uncertainty Δσ/σ = 2.0×10−6 and a systematic shift smoothly varying from +1 part in 106 at 18000 cm−1 to +4 parts in 106 at 33000 cm−1 (see Fig. 1).

Bottom Line: Eigenvector compositions and level designations are found in two alternate coupling schemes.Some of the older work is found to be incorrect.A revised value of the ionization energy, 173283(7) cm(-1), equivalent to 21.4844(8) eV, is derived from the new energy levels.

View Article: PubMed Central - PubMed

Affiliation: National Institute of Standards and Technology, Gaithersburg, MD 20899.

ABSTRACT
All available experimental measurements of the spectrum of the Ag(+) ion are critically reviewed. Systematic shifts are removed from the measured wavelengths. The compiled list of critically evaluated wavelengths is used to derive a comprehensive list of energy levels with well-defined uncertainties. Eigenvector compositions and level designations are found in two alternate coupling schemes. Some of the older work is found to be incorrect. A revised value of the ionization energy, 173283(7) cm(-1), equivalent to 21.4844(8) eV, is derived from the new energy levels. A set of critically evaluated transition probabilities is given.

No MeSH data available.