Regensburg 2013 – wissenschaftliches Programm

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MI: Fachverband Mikrosonden

MI 9: Poster: Microanalysis and Microscopy

MI 9.3: Poster

Mittwoch, 13. März 2013, 15:00–17:00, Poster B2

Beam characteristics of the new positron source NEPOMUC upgrade — •Thomas Gigl, Christian Piochacz, Florian Lippert, Samantha Zimnik, Markus Reiner, Philip Pikart, Hubert Ceeh, Josef-Andreas Weber, Sebastian Vohburger, and Christoph Hugenschmidt — Technische Universität München, Physik-Department E21 und FRM II, 85748 Garching

The neutron-induced positron source NEPOMUC at the FRM II provides a mono-energetic positron beam of high intensity for a variety of experiments in the field of solid state and surface physics. In order to increase the beam brightness the first version of NEPOMUC was improved and now replaced by NEPOMUC upgrade[1]. At the end of 2012 we succeeded to extract a slow positron beam (0,2-1 keV) with enhanced brightness. Detailed measurements of the beam characteristics such as intensity and beam shape will be presented. Furthermore an overview of recent and planed positron beam experiments for fundamental research and application in solid state physics is given.

References:

[1] C. Hugenschmidt, C. Piochacz, M. Reiner, K. Schreckenbach, The NEPOMUC upgrade and advanced positron beam experiments, New Journal of Physics 14, 2012