SAMOP 2021 – scientific programme

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MS: Fachverband Massenspektrometrie

MS 7: Accelerator Mass Spectrometry I

MS 7.1: Invited Talk

Thursday, September 23, 2021, 10:45–11:15, H3

The new compact, multi isotope AMS system (MILEA) at ETH Zurich - performance and applications — •Marcus Christl¹, Sascha Maxeiner², Arnold Müller², Philip Gautschi¹, Christof Vockenhuber¹, and Hans-Arno Synal¹ — ¹ETH Zürich, Switzerland — ²Ionplus AG, Dietikon, Switzerland

The prototype version of a new, compact, multi-isotope, low energy accelerator mass spectrometry system (MILEA) was built in collaboration with Ionplus AG and set into operation at ETH Zurich in late 2018. The system is based on a 300 kV power supply and was optimized for small footprint (3.5 x 7 m²) and to reach optimal performance for ¹⁰Be, ¹⁴C, ²⁶Al, ¹²⁹I, and actinide measurements at low energies. During the past years the system was thoroughly tested and it is now increasingly being used for routine AMS operations.

In the first part of the presentation, the layout of the system, its properties and setup for the different nuclides will be presented and the performance of the system will be discussed for the different nuclides. In the second part of the presentation some recent results of our actinide and heavy ion program will be presented including a ²³⁶U/²³⁸U record from sea shells in the Northeast Atlantic Ocean and ²³³U/²³⁶U data from the Arctic Ocean.