High-resolution spectroscopy of gaseous Kr-83m conversion electrons with the KATRIN experiment

0525024 - ÚJF 2021 RIV GB eng J - Journal Article
Altenmuller, K. - Arenz, M. - Baek, W. -J. - Beck, M. - Beglarian, A. - Behrens, J. - Dragoun, Otokar - Kovalík, Alojz - Lebeda, Ondřej - Ryšavý, Miloš - Sentkerestiová, Jana - Suchopár, Martin … Total 127 authors
High-resolution spectroscopy of gaseous Kr-83m conversion electrons with the KATRIN experiment.
Journal of Physics G-Nuclear and Particle Physics. Roč. 47, č. 6 (2020), č. článku 065002. ISSN 0954-3899. E-ISSN 1361-6471
R&D Projects: GA MŠMT LM2015056; GA MŠMT LTT18021; GA MŠMT LTT19005
Institutional support: RVO:61389005
Keywords : neutrino mass * electrostatic spectrometer * calibration * conversion electrons
OECD category: Particles and field physics
Impact factor: 3.045, year: 2020
Method of publishing: Open access
https://doi.org/10.1088/1361-6471/ab8480

In this work, we present the first spectroscopic measurements of conversion electrons originating from the decay of metastable gaseous Kr-83m with the Karlsruhe Tritium Neutrino (KATRIN) experiment. The obtained results represent one of the major commissioning milestones for the subsequent direct neutrino mass measurement with KATRIN. The successful campaign demonstrates the functionalities of the KATRIN beamline. Precise measurement of the narrow K-32, L-3-32, and N-2,N-3-32 conversion electron lines allowed to verify the eV-scale energy resolution of the KATRIN main spectrometer necessary for competitive measurement of the absolute neutrino mass scale.
Permanent Link: http://hdl.handle.net/11104/0309226