NDLI: Reflection of the xenon scintillation light from Polytetrafluoroethylene (PTFE)

Content Provider	IEEE Xplore Digital Library
Author	Silva, C. da Cunha, J. P. Pereira, A. Chepel, V. Lopes, M. I. Solovov, V.
Copyright Year	2008
Description	Author affiliation: LIP-Coimbra of the Department of Physics of the University of Coimbra, 3004-516, Portugal (Silva, C.; da Cunha, J. P.; Pereira, A.; Chepel, V.; Lopes, M. I.; Solovov, V.)
Abstract	Liquid Xenon particle detectors are being used for a number of applications including dark matter search and neutrino-less double beta decay experiments. Polytetrafluoroethylene (PTFE) is often used in these detectors both as an electrical insulator and as a light reflector to improve efficiency of detection of scintillation photons. However, liquid xenon emits in the VUV wavelength region (λ=175 nm) where the properties of PTFE are not sufficiently known. In this work we report on measurements of PTFE reflectance, including its angular distribution, for the xenon scintillation light. Various samples of PTFE, manufactured by different processes (extruded, expanded, skived and pressed) have been studied. The data were interpreted with a physical model comprising both specular and diffuse reflections. The reflectance obtained for these samples, except the expanded sample, is between 0.47 and 0.66 at θ=0°. Some other fluoropolymers namely ETFE, FEP and PFA were also measured.
Starting Page	1253
Ending Page	1258
File Size	3541114
Page Count	6
File Format	PDF
ISBN	9781424427147
ISSN	10957863
DOI	10.1109/NSSMIC.2008.4774633
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-10-19
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical reflection Xenon Reflectivity Solid scintillation detectors Radiation detectors Radioactive decay Dielectrics and electrical insulation Wavelength measurement Powders Polymers
Content Type	Text
Resource Type	Article

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