Bochum 2009 – wissenschaftliches Programm

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HK: Fachverband Hadronen und Kerne

HK 10: Accelerators and Instrumentation II

HK 10.2: Vortrag

Montag, 16. März 2009, 14:30–14:45, H-ZO 90

On the release of 83mKr — •Makhsud Rasulbaev¹, Reiner Vianden¹, Karl Maier¹, Henrik Arlinghaus², Marcus Beck², Tim Schäfer², Christian Weinheimer², and Miroslav Zboril² — ¹HISKP der Universität Bonn, Bonn, Germany — ²Institut für Kernphysik der Universität Münster, Münster, Germany

The mono-energetic electrons with the kinetic energy of 17.8 keV from ^83mKr (t_1/2=1.83 h), daughter isotope of ⁸³Rb decay, are exploited for the calibration and monitoring of the main spectrometer voltage in the KATRIN experiment, which of utmost importance for the long term stability of the measurements. Until now there were problems with the release of ^83mKr out of ⁸³Rb source. It was investigated how heating of the Rb source, following vacuum evacuation of the volume can improve the release of ^83mKr.