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

0525024 - ÚJF 2021 RIV GB eng J - Článek v odborném periodiku
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 … celkem 127 autorů
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
Grant CEP: GA MŠMT LM2015056; GA MŠMT LTT18021; GA MŠMT LTT19005
Institucionální podpora: RVO:61389005
Klíčová slova: neutrino mass * electrostatic spectrometer * calibration * conversion electrons
Obor OECD: Particles and field physics
Impakt faktor: 3.045, rok: 2020
Způsob publikování: 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.
Trvalý link: http://hdl.handle.net/11104/0309226