• Corpus ID: 248505858

A method for determining the transition energies of $^{\mathrm{83m}}$Kr at the KATRIN experiment

@inproceedings{Rodenbeck2022AMF,
  title={A method for determining the transition energies of \$^\{\mathrm\{83m\}\}\$Kr at the KATRIN experiment},
  author={Caroline Rodenbeck},
  year={2022}
}

• C. Rodenbeck
• Published 3 May 2022
• Physics

The neutrino mass experiment KATRIN uses conversion electrons from the 32 . 2 - keV transition of the nuclear isomer ⁸³mKr for calibration. Comparing the measured energy of the conversion electrons to the literature values allows for an independent evaluation of KATRIN’s energy scale, but the comparison is limited by the uncertainties in the literature values of the transition energies. In this paper, a novel method to perform precision spectroscopy of the transition energies is presented. Notably, the method uses conversion electrons from the 41 . 6 - keV direct transition of ⁸³mKr to its ground state in addition to conversion electrons from the much more frequent cascade of a 32 . 2 - keV and a 9 . 4 - keV transition. By implementing this method, KATRIN may be able to deliver order-of-magnitude improvements in precision over current ⁸³mKr transition energy literature values. Such improvements would benefit not only KATRIN, but potentially also other experiments which use ⁸³mKr as a calibration source.