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Bidirectional reflectance distribution function of diffuse reflectance standards around the retro-reflection direction

AuthorsRabal, Ana M.; Ferrero, Alejandro ; Campos Acosta, Joaquín ; Pons Aglio, Alicia ; Hernanz, María Luisa
Diffuse reflectance standard
Issue Date2014
PublisherInstitute of Physics (Great Britain)
CitationMetrologia 51: 148- 153 (2014)
AbstractThe increase in the bidirectional reflectance distribution function around the retro-reflection direction was characterized for four common diffuse standard reflectance materials: Spectralon, matte white Russian opal glass, matte white ceramic standard and pressed barium sulphate (BaSO4) powder. The characterized increase or surge is high enough to be considered in low-uncertainty reflectance factor measurements, where the values are usually extrapolated around that direction due to instrumental limitations. In order to make the corrections for this surge, the coherent backscattering of light model and a much simpler exponential function were fitted to the measurements. © 2014 BIPM & IOP Publishing Ltd.
Identifiersdoi: 10.1088/0026-1394/51/3/148
issn: 1681-7575
Appears in Collections:(CFMAC-IO) Artículos
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