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sshade:databases:ghosst:spectro-gonio_radiometer [2017/10/11 07:06] – Bernard Schmitt | sshade:databases:ghosst:spectro-gonio_radiometer [2018/03/02 10:19] (current) – Bernard Schmitt | ||
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+ | ==== SHINE Spectro-Gonio Radiometer ==== | ||
+ | ---- | ||
+ | |||
+ | === Laboratory Experiment facility === | ||
+ | |||
+ | **Facility name:** | ||
+ | |||
+ | SHINE Spectro-Gonio Radiometer | ||
+ | |||
+ | **Location: | ||
+ | Institut de Planétologie et Astrophysique de Grenoble | ||
+ | |||
+ | CNRS - Université Grenoble Alpes | ||
+ | |||
+ | Saint Martin d’Hères, France | ||
+ | |||
+ | **Persons in charge:** | ||
+ | |||
+ | - Scientific : Bernard Schmitt, Research director | ||
+ | |||
+ | - Technical : Olivier Brissaud, Engineer | ||
+ | |||
+ | ---- | ||
+ | |||
+ | |||
+ | **General description** | ||
+ | |||
+ | This SHINE instrument is our unique home-made Spectro-Gonio Radiometer that allows to measure the bidirectional reflectance spectra and distribution functions of various types of planetary materials (granular to compact) over almost the whole solar spectrum, from the visible to the near-IR (from 400 to 4800 nm), with a high degree of radiometric accuracy (better than +/-0.5%) under most viewing geometries (illumination and observation up to almost 80°, all azimuths, phase angle > 4-10° ). The instrument is fully described in Brissaud et al. 2004, Appl. Optics, 43, 1926. | ||
+ | |||
+ | The instrument is located in a dark cold room that can be cooled down to -20°C. It is fully automatized and the data calibration and reduction are made with homemade softwares. Various types of measurements can be programmed: simple reflectance spectra at one geometry (but possibly varying with time, temperature, | ||
+ | |||
+ | //**sample holders: | ||
+ | |||
+ | It has currently 3 major sample holder configurations: | ||
+ | |||
+ | - //Open sample holders// (various sizes) in //cold chamber// over -20°C ─ +20°C temperature range. | ||
+ | |||
+ | - The //SERAC environmental cell// with cryostats, pumps, pressure and temperature controllers, | ||
+ | |||
+ | - The //CarboN-IR environmental// | ||
+ | |||
+ | //**Tools and sub-systems: | ||
+ | |||
+ | A number of sample preparation tools and experiment sub-systems are available to the facility: | ||
+ | |||
+ | - For samples preparation: | ||
+ | |||
+ | - For the experiment: a thermodynamic volumetric system with high accuracy pressure gauges (10-6 to 1 bar), a flow meter (1-10 sccm) and pumps. He-Ne laser + detectors, camera for sample monitoring, … | ||
+ | ---- | ||
+ | |||
+ | **Technical characteristics: | ||
+ | |||
+ | [[Spectral range]] : 0.35 - 4.5 µm (-> 5.0 µm: lower S/N) (4.2-4.3µm: | ||
+ | |||
+ | [[Spectral resolution]] : variable | ||
+ | |||
+ | - mini: < 0.1 nm (but S/N limited) | ||
+ | |||
+ | - maxi: 6 nm (< | ||
+ | |||
+ | [[Bidirectional Reflectance]] | ||
+ | |||
+ | - '' | ||
+ | |||
+ | - '' | ||
+ | |||
+ | - '' | ||
+ | |||
+ | - '' | ||
+ | |||
+ | - '' | ||
+ | - '' | ||
+ | |||
+ | [[Photometry]]: | ||
+ | |||
+ | '' | ||
+ | |||
+ | - 0.3-1.0 µm: better than 1% over all configurations (relative to a calibrated Spectralon 0.99 reference panel) | ||
+ | |||
+ | - 1.0-2.5 µm: better than 1% over all configurations | ||
+ | |||
+ | - 2.5-5 µm : better than 2% over all configurations | ||
+ | |||
+ | '' | ||
+ | |||
+ | - better than 0.5% (0.3-2.5 µm) | ||
+ | |||
+ | [[Polarimetry options]] (only partly tested) | ||
+ | |||
+ | '' | ||
+ | |||
+ | - linear polarization : variable 0 to 90° ; spectral range : 0.3 - 2.8 µm | ||
+ | |||
+ | '' | ||
+ | |||
+ | - 1 component over the 0.3 - 5µm range + unpolarized or || and ┴ components over restricted spectral range | ||
+ | |||
+ | |||
+ | {{ : | ||
+ | |||
+ | // | ||
+ | |||
+ | {{ : | ||
+ | |||
+ | // | ||
+ | |||
+ | |||
+ | [[Samples]] | ||
+ | |||
+ | '' | ||
+ | |||
+ | '' | ||
+ | |||
+ | '' | ||
+ | |||
+ | '' | ||
+ | |||
+ | maxi: | ||
+ | |||
+ | - 300mm diameter, 250 mm deep (for bright & coarse grained samples) | ||
+ | |||
+ | - 120 mm in diameter, 2-10 mm deep (for dark or fine grained samples) | ||
+ | |||
+ | mini: | ||
+ | |||
+ | - 25 mm x 120 mm (for principal plane observation down to 80°) | ||
+ | |||
+ | - 25 mm x 45 mm (for principal plane observation down to 60°) | ||
+ | |||
+ | |||
+ | [[Temperature]]: | ||
+ | |||
+ | - room temperature or heated | ||
+ | |||
+ | - down to -20°C (in cold room) | ||
+ | |||
+ | - down to -40°C (in SERAC environmental cell) | ||
+ | |||
+ | - down to -200°C (in CarboN-IR environmental cell) | ||
+ | |||
+ | [[Experiment control]]: | ||
+ | |||
+ | - PC/ | ||
+ | |||
+ | [[Acquisition time]]: | ||
+ | |||
+ | - typical: 15 mn for 200 spectral channels in visible (S/N dependent) | ||
+ | |||
+ | - total: 15 hours for 100 spectral channels and 100 geometries | ||
+ | |||
+ | [[Current state of system]]: | ||
+ | |||
+ | - 0.35 - 5 µm range: fully calibrated | ||
+ | |||
+ | - polarization: | ||
+ | |||
+ | - low temperature: | ||
+ | |||
+ | * // | ||
+ | |||
+ | * // | ||
+ | |||
+ | |||
+ | **Availability to community: ** | ||
+ | |||
+ | - Technical improvements/ | ||
+ | |||
+ | - IPAG + associated laboratories measurements (60%) | ||
+ | |||
+ | - open as Europlanet facility or to specific collaborations w. funding (20%) | ||
+ | |||
+ | ---- | ||
+ | |||
+ | |||
+ | **References: | ||
+ | |||
+ | - Bonnefoy, N., O. Brissaud, B. Schmitt, S. Douté, M. Fily, W. Grundy, and P. Rabou 2000. Experimental system for the study of planetary surface materials’ BRDF. Remote Sensing. Rev., 19, 59-74 [doi: 10.1080/ | ||
+ | |||
+ | - Bonnefoy, N. 2001. Développement d’un spectrophoto-goniomètre pour l’étude de la réflectance bidirectionnelle des surfaces géophysiques. Application au soufre et perspectives pour le satellite Io. PhD Thesis, LPG - Université Joseph Fourier, Grenoble (20/ | ||
+ | |||
+ | - Brissaud, O., B. Schmitt, N. Bonnefoy, S. Douté, P. Rabou, W. Grundy, and M. Fily 2004. Spectrogonio radiometer for the study of the bidirectional reflectance and polarization functions of planetary surfaces: I. Design and tests. Appl. Optics, 43 (9), 1926-1937 [doi: 10.1364/ | ||
+ | |||
+ | - Bernard, J-M, E. Quirico, O. Brissaud, G. Montagnac, , B. Reynard, P. Mc Millan, P. Coll, M-J Nguyen, F. Raulin, B. Schmitt 2006. Reflectance spectra and chemical structure of Titan’s tholins. Application to the analysis of CASSINI-HUYGENS observations. Icarus 185, 301-307 [doi: 10.1006/ | ||
+ | |||
+ | - Pommerol, A., and B. Schmitt 2008a. Strength of the H2O near-infrared absorption bands in hydrated minerals: Effects of particle size and correlation with albedo. J. Geophys. Res E, 113, E10009 [doi: | ||
+ | |||
+ | - Pommerol, A., and B. Schmitt 2008b. Strength of the H2O near-infrared absorption bands in hydrated minerals: Effects of measurement geometry. J. Geophys. Res E, 113, E12008 [doi: 10.1029/ | ||
+ | |||
+ | - Quirico, E., G. Montagnac, V. Lees, P. F. McMillan, C. Szopa, G. Cernogora, J-N Rouzaud, P. Simon, J-M Bernard, P. Coll, N. Fray, B. Minard, F. Raulin, B. Reynard, B. Schmitt 2008. New experimental constraints on the composition and structure of tholins. Icarus, 198, 218-231 [doi: 10.1016/ | ||
+ | |||
+ | - Pommerol, A., B. Schmitt, P. Beck, and O. Brissaud 2009. Water sorption on Martian regolith analogs: thermodynamics and near-infrared reflectance spectroscopy. Icarus, 204, 114-136 | ||
+ | |||
+ | - Pommerol A. 2009. Hydratation minérale à la surface de mars : Caractérisation spectroscopique, | ||
+ | |||
+ | - Dumont, M., O. Brissaud, G. Picard, B. Schmitt, J.C.Gallet, and Y. Arnaud, 2010. High-accuracy measurements of snow Bidirectional Reflectance Distribution Function at visible and NIR wavelengths; | ||
+ | |||
+ | - Beck, P., A. Pommerol, B. Schmitt and O. Brissaud 2010. Kinetics of water adsorption on minerals and the breathing of the Martian regolith. J. Geophys. Res. E. 115, E10011 [doi: 10.1029/ | ||
+ | |||
+ | - Beck, P., E. Quirico, D. Sevestre, G. Montes-Hernandez, | ||
+ | |||
+ | - Beck, P., J-A. Barrat, F. Grisolle, E. Quirico, B. Schmitt, F. Moynier, P. Gillet, and C. Beck 2011. NIR spectral trends of HED meteorites: Can we discriminate between the magmatic evolution, mechanical mixing and observation geometry effects? Icarus, 216, 560-571 [doi: 10.1016/ | ||
+ | |||
+ | - Grisolle F. 2013. Les condensats saisonniers de Mars : étude expérimentale de la formation et du métamorphisme de glaces de CO2. PhD Dissertation, | ||
+ | |||
+ | - Massé, M., P. Beck, B. Schmitt, A. Pommerol, A. McEwen, V.F. Chevrier, O. Brissaud and A. Séjourné 2014. Spectroscopy and detectability of liquid brines on Mars. Planetary & Space Sciences, 92, 136-149 [doi: 10.1016/ | ||