Isotope shift and hyperfine splitting of the 4s 5p transition in potassium

  • Behrle A
  • Koschorreck M
  • Köhl M
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Abstract

We have investigated $4s; 2S1/2 rightarrow 5p; 2P1/2 transition (D1 line) of the potassium isotopes 39K, 40K, and 41K using Doppler-free laser saturation spectroscopy. Our measurements reveal the hyperfine splitting of the $5p; 2P1/2 state of 40K and we have determined the specific mass shift and the nuclear field shift constants for the blue D1 line.

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Authors

  • Alexandra Behrle

  • Marco Koschorreck

  • Michael Köhl

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