Distribution of the 83Rb/83mKr activity on vacuum evaporated samples examined with the Timepix position sensitive detector

Details Distribution of the 83Rb/83mKr activity on vacuum evaporated samples examined with the Timepix position sensitive detector Distribution of the 83Rb/83mKr activity on vacuum evaporated samples examined with the Timepix position sensitive detector

2007-12-22

arxiv.org/abs/0712.3860v1

Physics

Nuclear Physics

Nuclear Experiment

8 pages, 3 figures, 2 tables

Scientific paper

Properties of vacuum evaporated 83Rb/83mKr sources of low-energy conversion electrons, which are under development for monitoring the energy scale stability of the Karlsruhe Tritium Neutrino experiment KATRIN, were examined by the Timepix pixel detector exhibiting the position resolution of at least 55 microm. No distinct local inhomogeneities in the surface distribution of 83Rb/83mKr were observed. The source diameter derived from the recorded image agrees within 5 % with that expected from evaporation geometry. More precise determination of the actual source diameter is complicated by Compton scattered electrons caused by 83Rb gamma-rays.

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