Scattering of sub-millimeter radiation from rough surfaces: absorbers and diffuse reflectors for HIFI and PACS

Details Scattering of sub-millimeter radiation from rough surfaces: absorbers and diffuse reflectors for HIFI and PACS Scattering of sub-millimeter radiation from rough surfaces: absorbers and diffuse reflectors for HIFI and PACS

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003spie.4850..788k&link_type=abstract

IR Space Telescopes and Instruments. Edited by John C. Mather . Proceedings of the SPIE, Volume 4850, pp. 788-796 (2003).

Mathematics

Scientific paper

Absorbing coatings for the HIFI and PACS spectrometers aboard the Herschel platform have been developed and optically characterized. Using radiation from an optically pumped far-infrared laser at wavelengths in the 90 - 900 μm range, the specular as well as the diffuse reflection - characterized by the Bi-directional Reflection Distribution Function - have been determined. The influence of polarization has been addressed too. Moreover, the absorption of non-absorbing diffusely reflecting surfaces, to be used for integrating spheres, has been determined using a low temperature calorimetric method.

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