Mainz 2014 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 105: Experimentelle Methoden der Astroteilchenphysik 4

T 105.9: Vortrag

Donnerstag, 27. März 2014, 18:45–19:00, P7

Scintillation of Liquid Noble Gases — •Andreas Ulrich¹, Thomas Dandl¹, Thomas Heindl¹, Martin Hofmann¹, Alexander Neumeier¹, Lothar Oberauer¹, Walter Potzel¹, Stefan Schönert¹, and Jochen Wieser² — ¹Physik Department E12/E15, TU-München, James-Franck-Str. 1, 85748 Garching — ²Excitech GmbH, Branterei 33, 26419 Schortens

Liquid noble gases are frequently used as scintillating detector material in rare event physics. For studying the optical properties of this material we have developed techniques to induce the scintillation light by particle beams, both electron and ion beams. In this presentation we will summarize the results which have been obtained using time resolved optical spectroscopy for liquid argon and mixtures of liquid argon with xenon. The focus is on the emission features which have been observed, so far, in a wide wavelength range from 120 to 3000 nm [1,2]. The results will be compared with emission spectra in the gas phase. The attenuation of vacuum ultraviolet light in liquid argon [3] and argon xenon mixtures relevant for large detector installations will be discussed in a separate presentation.

[1] T. Heindl et al., Eur. Phys. Lett. 91, 62002 (2010)

[2] M. Hofmann et al., Eur. Phys. J. C 73:2618 (2013)

[3] A. Neumeier et al., Eur. Phys. J. C 72:2190 (2012)

This research was supported by the DFG cluster of excellence ’Origin and Structure of the Universe’ and the Maier-Leibnitz-Laboratorium (Garching).