Dresden 2013 – scientific programme

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T: Fachverband Teilchenphysik

T 75: Detektoren und Detektorsysteme 3

T 75.7: Talk

Thursday, March 7, 2013, 18:15–18:30, GER-052

Measurement of Natural Radioactivity with REGe Detectors at the MPI für Physik — •Sabine Irlbeck — Max-Planck-Institut für Physik, München

Two Reverse Electrode Coaxial Germanium Detectors are used to monitor the natural radioactivity at the Max-Planck-Institut für Physik in Munich since March 2011, two weeks after the reactor accident in Fukushima, Japan. The count rate for prominent elements have been monitored continuously over this long time period. The rate of Cs-137 is particularly interesting, as caesium is a tracer for nuclear disasters. A detailed statistical analysis of the data shows that only statistical fluctuations are observed. However, it was noted that the ratio of caesium to bismuth within the laboratory is significantly larger than outside due to old radioactive depositions inside the building.