Spectrum

Vis-NIR reflectance spectrum of Bordezac pigment (PIG-0160-2016-D), raw block #2, face #3

Title
Vis-NIR reflectance spectrum of Bordezac pigment (PIG-0160-2016-D), raw block #2, face #3
DOI
10.26302/SSHADE/EXPERIMENT_BS_20200422_100
Data reference
Schmitt, Bernard; Chalmin-Aljanabi, Emilie (2019): Vis-NIR reflectance spectra of Bordezac pigments (PIG-0160-2016-D): raw blocks, powder and painted matter. SSHADE/PIG (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_BS_20200422_100
Experiment type
laboratory measurement
Type
reflectance factor
Instrument
SHADOWS Spectro-Gonio bidirectional reflection Vis-NIR
Sample holder
cylindrical black anodized aluminium sample holder (D=20mm, d=5mm) for powder
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
#1 486.0 - 650.0 4.0 1.9 0.1
Filters
Type Center/Edge ($nm$) Width ($nm$) Place
#1 several high frequency filters output of monochromator
Scan number
10
Comments
measured over the 362-650nm range
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
Resolutions
5.2 ${\pm}$ 0.1 $mm$
Comments
illumination with 8 fiber optic spots within a 5.2 mm diameter, observation within an ellipse of 23x20 mm
Instrument
SHINE Spectro-Gonio bidirectional reflection Vis-NIR
Sample holder
cylindrical raw aluminium sample holder (D=18mm, d=4.5mm) for powder
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
#1 654.0 - 1426.0 4.0 3.8 0.2
#2 1430.0 - 3198.0 4.0 7.6 0.4
#3 3202.0 - 4186.0 8.0 15.5 0.8
Filters
Type Center/Edge ($nm$) Width ($nm$) Place
#1 several high frequency filters output of monochromator
Scan number
10
Comments
measured over the 402-4202nm range
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
Resolutions
7.5 ${\pm}$ 0.2 $mm$
Comments
illumination with 9 fiber optic spots within 7.5 mm diameter, observation within an ellipse of 23x20 mm
Name
Pigment Bordezac (PIG-0160-2016-D), facies D, raw block #2
Comments
Measured on the fresh side in shiny grey with a red trace
Experiment
Vis-NIR reflectance spectra of Bordezac pigments (PIG-0160-2016-D): raw blocks, powder and painted matter
Date begin
2020-02-15
Date end
2020-02-20
Release date
2020-08-28 04:51:43 UTC+0000
Version (Date)
#1 (2020-05-30 20:03:34 UTC+0000, Updated: 2020-08-28 04:51:43 UTC+0000)
History
Date Mode Version Status Comments
2020-05-30 20:03:34 UTC+0000 first import #1 valid version
Analysis
raw bidirectional reflectance spectrum calibrated: 1) with "Spectralon 99%" measured under same geometry using its absolute BRDF (0.36-1.3µm) and 2) with "Infragold" using its relative spectral reflectance (1.3-4.2µm). The residual water vapor lines, around 1.12, 1.38, 1.87, 2.665µm, have been corrected by multiplying by a scaled water vapor transmission spectrum measured at same resolution and sampling. A slight smoothing (binomial over 5 points) has been applied, except in the narrow absorption band.
Quality flag
4
Validator(s)