High-resolution spectroscopy of gaseous ${}^{83m}$Kr conversion electrons with the KATRIN experiment

Abstract

In this work, we present the first spectroscopic measurements of conversion electrons originating from the decay of metastable gaseous ${}^{83m}$Kr with the Karlsruhe Tritium Neutrino (KATRIN) experiment. The results obtained in this calibration measurement represent a major commissioning milestone for the upcoming direct neutrino mass measurement with KATRIN. The successful campaign demonstrates the functionalities of the full KATRIN beamline. The KATRIN main spectrometer's excellent energy resolution of ~ 1 eV made it possible to determine the narrow K-32 and L${}_3$-32 conversion electron line widths with an unprecedented precision of ~ 1 %.

arXiv commentFixed affiliation of the corresponding author

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Cited by in corpus (12)

• The Design, Construction, and Commissioning of the KATRIN Experiment
• Analysis methods for the first KATRIN neutrino-mass measurement
• Bound on 3+1 active-sterile neutrino mixing from the first four-week science run of KATRIN
• KATRIN: Status and Prospects for the Neutrino Mass and Beyond
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• Viterbi Decoding of CRES Signals in Project 8
• Measurement of the electric potential and the magnetic field in the shifted analysing plane of the KATRIN experiment
• Development of a ${}^{83\mathrm{m}}$Kr source for the calibration of the CENNS-10 Liquid Argon Detector