Wuppertal 2015 – scientific programme

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T: Fachverband Teilchenphysik

T 23: Detektorsysteme 2

T 23.2: Talk

Monday, March 9, 2015, 17:00–17:15, L.09.21 (HS 13)

Intense Vacuum Ultraviolet and Infrared Scintillation of Liquid Ar-Xe Mixtures — •Alexander Neumeier¹, Thomas Dandl², Thomas Heindl², Andreas Himpsl², Lothar Oberauer¹, Walter Potzel¹, Sabine Roth¹, Stefan Schönert¹, Jochen Wieser², and Andreas Ulrich² — ¹Physik-Department E15, Technische Universität München, James-Franck-Straße 1, 85748 Garching, Germany — ²Physik-Department E12, Technische Universität München, James-Franck-Straße 1, 85748 Garching, Germany

Electron-beam excited xenon-doped liquid argon has two intense and well separated scintillation signals in the vacuum ultraviolet (VUV) and in the near-infrared (NIR) wavelength region. Wavelength resolved scintillation spectra of liquid argon-mixtures are presented in a wide wavelength range from 115 to 3500 nm. The most intense emission features in the VUV and the NIR were measured time resolved (ns resolution) under pulsed electron-beam excitation. In this talk, the different detection principles, the results and a possible application in a novel detector concept are briefly discussed. This research was supported by the DFG cluster of excellence "Origin and Structure of the Universe" (www.universe-cluster.de) and by the Maier-Leibnitz-Laboratorium in Garching.