Spectrum

Vis-NIR spectrum of NH4-Montmorillonite with 0-25µm grain sizes at 180K

Title
Vis-NIR spectrum of NH4-Montmorillonite with 0-25µm grain sizes at 180K
DOI
10.26302/SSHADE/EXPERIMENT_BS_20191214_001
Data reference
Galiano, Anna; Dirri, Fabrizio; Schmitt, Bernard; Beck, Pierre; Brissaud, Olivier (2019): Vis-NIR spectra of NH4-Montmorillonite, Antigorite, Dolomite and Graphite and their mixtures with different grain sizes and temperatures (140-300 K). SSHADE/CSS+REFL_SLAB (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_BS_20191214_001
Publications
Experiment type
laboratory measurement
Type
reflectance factor
Instrument
SHINE Spectro-Gonio bidirectional reflection Vis-NIR
Sample holder
Aluminum cylindrical cell (10 mm diameter, 2 mm deep) inside P-T controled copper cell closed by sapphire windows and cooled by helium cryocooler (CarboN-IR environmental cell)
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
#1 600.0 - 660.0 20.0 3.2 1.0
#2 680.0 - 1380.0 20.0 6.4 1.0
#3 1400.0 - 2980.0 20.0 12.7 2.0
#4 3000.0 - 4180.0 20.0 25.7 4.0
Scan number
10
Comments
measured in the 400-4200nm range using 1.0 mm slit - several high pass filters to cut higher diffraction orders of the grating
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°
Comments
using the 'Gognito' attachment
Observation mode
single spot
Resolutions
7.5 $mm$
Experiment
Vis-NIR spectra of NH4-Montmorillonite, Antigorite, Dolomite and Graphite and their mixtures with different grain sizes and temperatures (140-300 K)
Date begin
2019-02-18
Release date
2020-03-02 12:02:26 UTC+0000
Version (Date)
#1 (2020-03-02 12:02:26 UTC+0000, Updated: 2020-03-02 18:16:42 UTC+0000)
History
Date Mode Version Status Comments
2019-12-19 11:03:01 UTC+0000 first import #1 valid version
Analysis
raw bidirectional reflectance spectrum calibrated with Spectralon 99% (< 2.1 µm) and Infragold (> 2.1 µm) references under same geometry and with its absolute BRDF
Quality flag
4