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HK: Fachverband Physik der Hadronen und Kerne

HK 42: Nuclear Astrophysics III

HK 42.6: Vortrag

Donnerstag, 30. März 2017, 15:30–15:45, F 33

Determination of the ¹²⁹I Half-Life Using Research Reactors — •Kafa Khasawneh¹, Lukas Bott¹, Alexander Domula², Klaus Eberhardt³, Jan Glorius⁴, Kathrin Göbel¹, Tanja Heftrich¹, René Reifarth¹, Stefan Schmidt¹, Kerstin Sonnabend¹, Mario Weigand¹, Norbert Wiehl³, Mathilde Ziegler-Himmelreich¹, Stephan Zauner³, and Kai Zuber² — ¹Goethe University Frankfurt — ²Technical University Dresden — ³Johannes Gutenberg University Mainz — ⁴GSI-Helmholtzzentrum für Schwerionenforschung

A new methodology was adopted in order to determine the half-life of ¹²⁹I. Half-life measurements in the range of a few million years rely on the determination of the number of radioactive atoms and the activity. In this work the number of atoms was determined from the activity of the short-lived isotope ¹²⁹Te, which decays into the desired isotope. ¹²⁹Te was produced at TRIGA MARK II Reactor irradiating ¹²⁸Te. The long-lived activity was investigated above and under ground at the Felsenkeller Dresden. We will present the method, the current status of analysis as well as future options.