Nuclear laser spectroscopy of the 3.5 eV transition in Th-229

  title={Nuclear laser spectroscopy of the 3.5 eV transition in Th-229},
  author={Ekkehard Peik and Chr. Tamm},
We propose high-resolution laser spectroscopy of the 3.5 eV nuclear transition in Th-229 in isolated atoms. Laser excitation of the nucleus can be detected efficiently in a double-resonance method by probing the hyperfine structure of a transition in the electron shell. It is shown that for a suitably chosen electronic level, the frequency of the nuclear transition is independent of external magnetic fields to first order and of electric fields to second order. This makes Th-229 a possible… 

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