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HK: Fachverband Physik der Hadronen und Kerne
HK 72: Poster
HK 72.36: Poster
Thursday, March 14, 2024, 17:15–18:45, HBR 14: Foyer
83mKr N-line spectrum measurement at KATRIN — •Jaroslav Storek1, Moritz Machatschek1, and Matthias Böttcher2 for the KATRIN collaboration — 1Institute for Astroparticle Physics, Karlsruhe Institute of Technology — 2Institute of Nuclear Physics, University of Münster
The 83mKr conversion electrons are used for calibration purposes of different (astro-)particle physics experiments due to the narrow 83mKr line widths and short 83mKr half-life. In the KArlsruhe TRItium Neutrino experiment (KATRIN), that currently provides the best neutrino mass upper limit of 0.8 eV/c2 (90% C. L.) in the field of direct neutrino-mass measurements, several systematic uncertainties are studied by a shape distortion of the quasi monoenergetic 83mKr spectrum. This creates high demands on precise knowledge of the undistorted spectrum.
In KATRIN we use the 32 keV N-lines lying in the high energy region of the spectrum including the weaker N1 line. This poster summarizes the results of a dedicated measurement of the 83mKr electron N-spectrum with emphasis on N1 line conducted at KATRIN experiment.
This work is supported by the Helmholtz Association, by the Ministry for Education and Research BMBF (05A23PMA, 05A23PX2, 05A23VK2, and 05A23WO6) and the Doctoral School "Karlsruhe School of Elementary and Astroparticle Physics: Science and Technology (KSETA)" through the GSSP program of the German Academic Exchange Service (DAAD).
Keywords: krypton N lines; KATRIN