Precise energy of the 9.4 keV gamma transition observed in the 83Rb decay


The energy of the 9.4 keV γ-transition observed in the 83Rb decay was established to be 9405.8(3) eV. This energy value was obtained from photon spectrometry measurements of the differences in the energies of closely spaced lines. The result allows one to determine more precisely the energy of conversion electrons of the 9.4 keV transition, which represent a unique tool for energy calibration of the tritium beta spectrum and systematic measurements in the KATRIN neutrino mass determination experiment.


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Correspondence to M. Slezák.

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Communicated by A.A. Korsheninnikov

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Slezák, M., Vénos, D., Lebeda, O. et al. Precise energy of the 9.4 keV gamma transition observed in the 83Rb decay. Eur. Phys. J. A 48, 12 (2012).

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  • Tritium
  • Systematic Uncertainty
  • Amplitude Ratio
  • Conversion Electron
  • Calibration Line