0000000001248073

AUTHOR

C. Burch

showing 2 related works from this author

Dependence of polytetrafluoroethylene reflectance on thickness at visible and ultraviolet wavelengths in air

2020

[EN] Polytetrafluoroethylene (PTFE) is an excellent diffuse reflector widely used in light collection systems for particle physics experiments. However, the reflectance of PTFE is a function of its thickness. In this work, we investigate this dependence in air for light of wavelengths 260 nm and 450 nm using two complementary methods. We find that PTFE reflectance for thicknesses from 5 mm to 10 mm ranges from 92.5% to 94.5% at 450 nm, and from 90.0% to 92.0% at 260 nm We also see that the reflectance of PIFE of a given thickness can vary by as much as 2.7% within the same piece of material. Finally, we show that placing a specular reflector behind the PTFE can recover the loss of reflectan…

Physics - Instrumentation and DetectorsFOS: Physical sciencesLibrary science7. Clean energy01 natural sciences030218 nuclear medicine & medical imagingSynthetic materialsTECNOLOGIA ELECTRONICA03 medical and health sciences0302 clinical medicinePolitical science0103 physical sciencesmedia_common.cataloged_instanceEuropean unionInstrumentationUltraviolet radiationMathematical Physicsmedia_common010308 nuclear & particles physicsEuropean researchTime projection Chambers (TPC)Instrumentation and Detectors (physics.ins-det)Visible radiationDouble-beta decay detectorsReflectivityDetector design and construction technologies and materialsNational laboratory
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Dependence of polytetrafluoroethylene reflectance on thickness at visible and ultraviolet wavelengths in air

2021

Polytetrafluoroethylene (PTFE) is an excellent diffuse reflector widely used in light collection systems for particle physics experiments. However, the reflectance of PTFE is a function of its thickness. In this work, we investigate this dependence in air for light of wavelengths 260 nm and 450 nm using two complementary methods. We find that PTFE reflectance for thicknesses from 5 mm to 10 mm ranges from 92.5% to 94.5% at 450 nm, and from 90.0% to 92.0% at 260 nm. We also see that the reflectance of PTFE of a given thickness can vary by as much as 2.7% within the same piece of material. Finally, we show that placing a specular reflector behind the PTFE can recover the loss of reflectance i…

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