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
Atoms

Abstract

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 energyEi=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.

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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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