Projectile-dependent scintillation of a liquid phase argon-xenon mixture

The ratio of the scintillation intensity in the near-infrared (NIR) and in the vacuum-ultraviolet (VUV) from liquid argon with a volumetric fraction of of xenon (10 ppm) was studied with ion-beam excitation. Hydrogen, lithium, carbon, sulfur, and iodine ions from the Munich Tandem accelerator were u...

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Bibliographic Details
Published in:Europhysics letters 2019-12, Vol.128 (6), p.62002
Main Authors: Himpsl, A., Dandl, T., Hagn, H., Neumeier, A., Potzel, W., Wieser, J., Ulrich, A.
Format: Article
Language:English
Subjects:
29.40.Mc
Argon
Excitation
Iodine
Ion beams
Linear energy transfer (LET)
Liquid phases
Lithium
Near infrared radiation
Particle tracking
Projectiles
Scintillation
Xenon
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Summary:The ratio of the scintillation intensity in the near-infrared (NIR) and in the vacuum-ultraviolet (VUV) from liquid argon with a volumetric fraction of of xenon (10 ppm) was studied with ion-beam excitation. Hydrogen, lithium, carbon, sulfur, and iodine ions from the Munich Tandem accelerator were used for excitation. Average linear energy transfer (LET) values from 4.4 to 3500 MeV /mm were tested by the experiments. A variation of the NIR to VUV intensity ratios by a factor of 20 was observed. This is a promising result for the development of liquid argon-xenon detectors with sole optical particle identification and background reduction in rare-event physics. The results are interpreted on the basis of energy deposition around the particle tracks.
ISSN:0295-5075
1286-4854
1286-4854
DOI:10.1209/0295-5075/128/62002