Experiment
Title
Vis-NIR reflectance spectra of Fontenaille pigments (PIG-0175-2016) at different grain sizes and spectral resolution
DOI
10.26302/SSHADE/EXPERIMENT_BS_20191012_100
Data reference
Schmitt, Bernard; Chalmin-Aljanabi, Emilie (2019): Vis-NIR reflectance spectra of Fontenaille pigments (PIG-0175-2016) at different grain sizes and spectral resolution. SSHADE/PIG (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_BS_20191012_100
Comments
unpublished
Type(s)
laboratory measurement
Description
Vis-NIR reflectance spectra of Fontenaille pigments (PIG-0175-2016) for grain sizes < 160 µm and > 160 µm at 2 spectral resolutions
Number of spectra
5
Variable type(s)
  • sample grain size
Comments
2 grain size ranges, 2 spectral resolution (4-8nm and 10-40 nm)
Instrument
SHADOWS Spectro-Gonio bidirectional reflection Vis-NIR
Sample holder
cylindrical black anodized aluminium sample holders of different sizes and depths (D=7-18mm, d=2-4.5mm )
Standard medium
vacuum
Observation mode
spectrum
Spectral range type(s)
Vis
Valid spectral range(s)
Min - Max ($nm$) Sampling ($nm$) Resolution ($nm$) Position accuracy ($nm$) Absorption edge
#1 362.0 - 678.0 4.0 1.9 0.2
#2 682.0 - 998.0 4.0 3.8 0.4
Filters
Type Center/Edge ($nm$) Width ($nm$) Place
#1 several high frequency filters output of monochromator
Comments
resolutions slightly vary over the 2 gratings: 1.94-1.90, 3.88-3.86 nm
Observation geometry
bidirectional
Observation mode
fixed angles
Incidence angle
0.0°
Emergence angle
30.0°
Azimuth angle
0.0°
Phase angle
30.0°
Resolution illumination
5.8°
Resolution observation
4.1°
Illumination
Observation
Comments
some wavelength dependent polarization
Observation mode
single spot
Spatial resolution
5.2 ${\pm}$ 0.1 $mm$
Comments
illumination with 8 fiber optic spots within a 5.2 mm diameter, observation within an ellips of 23x20 mm
Instrument
SHINE Spectro-Gonio bidirectional reflection Vis-NIR
Sample holder
cylindrical raw aluminium sample holders of different sizes and depths (D=14-18mm, d=3.5-4.5mm for grains < 160µm, D=20mm, d=5mm for > 160µm)
Standard medium
vacuum
Observation mode
spectrum
Spectral range type(s)
Vis, NIR
Valid spectral range(s)
Min - Max ($nm$) Sampling ($nm$) Resolution ($nm$) Position accuracy ($nm$) Absorption edge
#1 402.0 - 678.0 4.0 0.96 0.1
#2 682.0 - 1426.0 4.0 3.8 0.4
#3 1430.0 - 3198.0 4.0 7.6 0.8
#4 3202.0 - 4802.0 8.0 15.5 1.6
Filters
Type Center/Edge ($nm$) Width ($nm$) Place
#1 several high frequency filters output of monochromator
Comments
resolution slightly vary over the gratings: 0.97-0.96, 3.88-3.77, 7.77-7.41, 15.52-15.32 nm
Observation geometry
bidirectional
Observation mode
fixed angles
Incidence angle
0.0°
Emergence angle
30.0°
Azimuth angle
0.0°
Phase angle
30.0°
Resolution illumination
5.8°
Resolution observation
4.1°
Illumination
Observation
Comments
some wavelength dependent polarization
Observation mode
single spot
Spatial resolution
7.5 ${\pm}$ 0.2 $mm$
Comments
illumination with 9 fiber optic spots within 7.5 mm diameter, observation within an ellips of 23x20 mm
Date begin - end
2019-09-26 - 2020-02-26

Versions

Release date
2020-06-25 12:04:48 UTC+0000
Version (Date)
#1 (2020-06-25 11:20:31 UTC+0000, Updated: 2020-06-27 18:37:28 UTC+0000)
Sponsors
  • Université de Savoie-Mont-Blanc (USMB) (MASCARA 2 et TRAnSFeRT)
  • Service Régional de l’Archéologie de la région Auvergne Rhône Alpes (SRA)