SMuK 2023 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 118: Dark Matter II

T 118.3: Vortrag

Donnerstag, 23. März 2023, 16:20–16:35, POT/0006

Understanding xenon scintillation properties — •Robert Hammann, Dominick Cichon, Luisa Hötzsch, Florian Jörg, Teresa Marrodán Undagoitia, and Mona Piotter — Max-Planck-Institut für Kernphysik

Xenon in gaseous and liquid form is a commonly used detector target material for rare-event searches like the direct detection of dark matter. The material has a number of beneficial properties for this application, one being that it is an excellent scintillator. Most xenon-based detectors rely on measuring the scintillation light component emitted in the vacuum ultraviolet range, however, light is also emitted in a wide spectrum of longer wavelengths. Exploring this parameter space could enable the construction of even more sensitive detectors in the future.

In this contribution, we present first measurements with a dedicated setup to extend our knowledge of the scintillation response in gaseous xenon to infrared light, which is so far not exploited in the field. In order to assess the usefulness of this wavelength range for rare-event searches, it is essential to characterize its response. We report measurements of the scintillation light yield for varying levels of electromagnetic impurities and as a function of the xenon gas pressure.