What Are Ritz Wavelengths in the NIST Atomic Spectra Database?

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SUMMARY

The Ritz wavelengths in the NIST Atomic Spectra Database represent calculated values derived from energy level differences during atomic transitions. These values can differ significantly from observed wavelengths, which are based on experimental data. The discrepancies arise due to the inherent limitations in the accuracy of both the calculated energy levels and the precision of experimental measurements. Understanding these differences is crucial for accurate spectral analysis in atomic physics.

PREREQUISITES
  • Understanding of atomic energy levels and transitions
  • Familiarity with the NIST Atomic Spectra Database
  • Knowledge of experimental precision in spectroscopic measurements
  • Basic principles of quantum mechanics
NEXT STEPS
  • Research the methodology behind calculating Ritz wavelengths
  • Explore the significance of experimental precision in atomic spectroscopy
  • Learn about the differences between calculated and observed spectral data
  • Investigate the applications of the NIST Atomic Spectra Database in research
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Physicists, researchers in atomic spectroscopy, and students studying quantum mechanics will benefit from this discussion, particularly those interested in the accuracy of spectral data and its implications in experimental physics.

lil1xal
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Hello all,

What is mean the Ritz Wavelengths in the NIST Atomic Spectra Database?

Why the Ritz or Observed value for some Wavelength are very different?

Thanks,
Lil
 
Last edited:
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See http://physics.nist.gov/PhysRefData/ASD/Html/lineshelp.html#OUTWAVELENGTH

The Ritz wavelengths are calculated from the difference in the energy levels involved in the transition, whereas the observed values are the experimental data. The accuracy of the Ritz wavelengths obviously depends on the accuracy of the calculated energy levels, and the accuracy of the observed values is limited by experimental precision, so some transitions can give quite different wavelengths.
 

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