First observation of liquid xenon electroluminescence with a Microstrip Plate

Abstract

We report on the first observation of electroluminescence amplification with a Microstrip Plate immersed in liquid xenon. The electroluminescence of the liquid, induced by alpha-particles, was observed in an intense non-uniform electric field in the vicinity of 8-$\mu$m narrow anode strips interlaced with wider cathode ones, deposited on the same side of a glass substrate. The electroluminescence yield in the liquid reached a value of $(35.5\pm 2.6)$ VUV photons/electron. We propose ways of enhancing this response with more appropriate microstructures towards their potential incorporation as sensing elements in single-phase noble-liquid detectors.

17 pages, 14 figures, prepared for submission to JINST

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Cited by in corpus (1)

• Feasibility of Liquid-phase Xenon Proportional Scintillation for Low-energy Physics