München 2019 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 54: Poster

HK 54.58: Poster

Donnerstag, 21. März 2019, 16:30–19:00, Foyer Theresanium

The new Neutron Depth Profiling Instrument N4DP at the MLZ — •Lukas Werner¹, Markus Trunk¹, Roman Gernhäuser¹, Ralph Gilles², Bastian Märkisch¹, and Zsolt Revay² — ¹Technische Universität München, Physikdepartment — ²Technische Universität München, Heinz-Maier-Leibnitz Zentrum

In neutron depth profiling (NDP), an applied nuclear physics technique, neutrons are captured by nuclei such as ⁶Li or ¹⁰B. The resulting compound nucleus then decays into two charged particles (an alpha and triton particle in the case of Lithium). Due to conservation of four-momentum, these particles are emitted back to back, at fixed energies. If the two charged particles are produced within a sample they will lose energy while propagating out of it. In NDP, this energy loss is correlated to the depth where this reaction takes place. At the Heinz-Maier-Leibnitz Zentrum in Garching a new instrument with a high neutron flux of up to 5¹⁰ n/sec cm² and a depth resolution down to 5 nm is currently being set up for a long series of measurements in very different fields of physics.