Experimental Determination of Transmittance of Porous Cerium Dioxide Media in the Spectral Range of 300-1,100 nm

A spectroscopy system is developed to measure radiative characteristics of participating media in the spectral range of 300-1,100 nm. The system incorporates a short-arc radiation source, double monochromator, optical chopper synchronized with a lock-in amplifier, and a silicon detector. Measurement...

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Bibliographic Details
Published inExperimental heat transfer Vol. 24; no. 4; pp. 285 - 299
Main Authors Liang, Z., Chueh, W. C., Ganesan, K., Haile, S. M., Lipiński, W.
Format Journal Article
LanguageEnglish
Published Philadelphia Taylor & Francis Group 01.10.2011
Taylor & Francis Ltd
Subjects
Attenuation
ceria
Cerium
cerium dioxide
Chemical compounds
Dioxides
Media
Opacity
Porosity
Radiation
radiometry
Scattering
solar energy
Spectra
spectroscopy
Spectrum analysis
thermal radiation
Transmittance
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Summary:A spectroscopy system is developed to measure radiative characteristics of participating media in the spectral range of 300-1,100 nm. The system incorporates a short-arc radiation source, double monochromator, optical chopper synchronized with a lock-in amplifier, and a silicon detector. Measurements of overall spectral transmittance are performed with two types of cerium dioxide samples with average porosities of 0.08 and 0.72, respectively. For both sample types, the spectral variation of the transmittance indicates mixed contribution by absorption and scattering to the observed attenuation in the considered spectral range. All samples are characterized by high opacity to radiation up to approximately 400 nm.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0891-6152
1521-0480
DOI:10.1080/08916152.2010.542876