Zeitschrift für Physik A Atoms and Nuclei

, Volume 315, Issue 2, pp 127–133 | Cite as

Precise quantum defects of nS, nP and nD Levels in Cs I

  • C. -J. Lorenzen
  • K. Niemax


Very accurate measurements of then2S1/2 (n=9–30),n2P1/2,3/2 (n=9–50) andn2D3/2, 5/2 (n=5, 8–32) energy levels in Cs I have been performed in the wavelength-range 6,379 Å<λ<7,432 Å with a high-precision vacuum-wavemeter using either Doppler-free two-photon spectroscopy or Doppler-limited one-photon spectroscopy with a frequency-doubling crystal. Thermionic detectors were used throughout the experiments. By fitting the experimental energy values to extended Rydberg-Ritz formulas, accurate quantum defect data and series limits are given. The ionization energyE i =31,406.4710(7) cm−1 was adopted to be the best fit value, differing significantly from most recent evaluations of other authors, but agreeing well with former, less accurate measurements performed in our laboratory.


Spectroscopy Energy Level Elementary Particle Accurate Quantum Recent Evaluation 
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Copyright information

© Springer-Verlag 1984

Authors and Affiliations

  • C. -J. Lorenzen
    • 1
  • K. Niemax
    • 1
  1. 1.Institut für Experimentalphysik der Universität KielFederal Republic of Germany

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