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MS: Massenspektrometrie

MS 2: Accelerator Mass Spectrometry 2

MS 2.1: Group Report

Monday, April 2, 2001, 17:15–17:45, EB 202

AMS with the gas-filled-magnet at the Munich Tandem Accelerator — •K. Knie¹, T. Faestermann¹, G. Korschinek¹, G. Rugel², A. Wallner², and C. Wallner¹ — ¹Technische Universität München, Physik Department — ²Ludwig Maximilians Universität München, Institut für Radiobiologie

The gas-filled-magnet GAMS at the Munich Tandem accelerator has proven to be a most sensitive instrument for heavy long-lived radionuclides. This motivated us to tackle several demanding studies, like the determination of the fast neutron fluence in Hiroshima [measurement of ⁶³Ni (T_1/2= 100 a) formed by ⁶³Cu(n,p)⁶³Ni] and the detection of supernova formed radionuclides on Earth [measurement of ⁶⁰Fe (T_1/2= 1.5 Ma) in deep ocean aggregations]. Ultrahigh sensitivity has also been reached for actinide ions, especially for Pu isotopes. Recent results will be shown. Technical details of the AMS facility will be discussed.