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Correction Factors for Reflectance and Transmittance Measurements of Scattering Samples in Focussing Coblentz Spheres and Integrating Spheres
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics. Uppsala University, Department of Technology, Uppsala, Sweden.ORCID iD: 0000-0003-2887-049X
Uppsala University, Department of Technology, Uppsala, Sweden.
1995 (English)In: Review of Scientific Instruments, ISSN 0034-6748, E-ISSN 1089-7623, Vol. 66, no 3, p. 2411-2422Article in journal (Refereed) Published
Abstract [en]

The detector signals from a total integrated scatter (TIS) instrument, which uses a focusing Coblentz sphere, have been evaluated. Models for the calculation of correct reflectance and transmittance values for both scattering and nonscattering samples are presented. In particular, the correction for multiple reflections between sample and detector, the detector efficiency versus angle of incidence, and the symmetry properties of the Coblentz sphere have been investigated. Experimental results are compared with results obtained with an integrating sphere using a model for the correction of sphere asymmetry. The results show that the transmittance and reflectance values obtained with the TIS instrument and the integrating sphere agree only when the presented correction factors are properly taken into account.

Place, publisher, year, edition, pages
1995. Vol. 66, no 3, p. 2411-2422
Keyword [en]
Aluminum; Detectors; Light polarization; Light scattering; Light transmission; Mathematical models; Mirrors; Optical instruments; Plastic films; Reflection
National Category
Physical Sciences Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:hig:diva-23251DOI: 10.1063/1.1145639Scopus ID: 2-s2.0-0029271172OAI: oai:DiVA.org:hig-23251DiVA, id: diva2:1062897
Available from: 2008-10-17 Created: 2017-01-05 Last updated: 2018-03-13Bibliographically approved

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Rönnow, Daniel

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CiteExportLink to record
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  • apa
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  • sv-SE
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  • nn-NB
  • de-DE
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Output format
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