Spectrum

Vis-NIR reflectance spectrum of sublimating Water ice particles 67±31 μm containing 1 wt.% Smectite in intra-mixture after 19.63h

Title
Vis-NIR reflectance spectrum of sublimating Water ice particles 67±31 μm containing 1 wt.% Smectite in intra-mixture after 19.63h
DOI
10.26302/SSHADE/EXPERIMENT_OP_20180119_001
Data reference
Poch, Olivier (2014): Vis-NIR reflectance spectra of the sublimation of Water ice particles containing 1 wt.% Smectite in intra-mixture. SSHADE/BYPASS (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_OP_20180119_001
Publications
Database
Experimentalists
Experiment type
laboratory measurement
Type
reflectance factor
Comments
In the reduced data set, absolute uncertainty on the calibrated reflectance factor is ±0.1, and the spatial variability of the reflectance across the field of view is of the order of 10%. Thus, the SCITEAS imaging system does not provide a very accurate measurement of the absolute reflectance, but it provides a spectrum resolved in wavelength from 0.4 to 2.4 μm.
Instrument
SCITEAS Imaging System - hyperspectral imaging system Vis-NIR
Sample holder
Aluminum sample holder, rectangular 120x60 mm with a thickness of 20mm, equipped with PT100 temperature sensors
Standard medium
air
Observation mode
spectrum
Spectral range type(s)
Vis, NIR
Valid spectral range(s)
Min - Max (${\mu}m$) Sampling (${\mu}m$) Resolution (${\mu}m$) Position accuracy (${\mu}m$) Absorption edge
#1 0.38 - 0.96 0.02 0.015
#2 0.96 - 2.3 0.01 0.03
Scan number
1
Observation geometry
biconical
Observation mode
fixed angles
Emergence angle
13.0°
Azimuth angle
0.0°
Comments
The light beam emitted from the extremity of the fibre bundle positionned about 300 mm above the sample surface has a divergence half-angle of 12.7°. The light source incidence and azimuth angles are slightly variable from pixel to pixel.
Observation mode
roi averaged
Comments
Note to the provider: Complete the "image" observation_mode when fully implemented in SSHADE. Because SCITEAS data are hyperspectral images.
Name
Sublimation mantle of Smectite on Water ice and Smectite intra-mixture particles 67±31 μm
Changes
After 19.63h of sublimation, a desiccated layer made of pure smectite, about 5.30±0.39 mm thick, covers the ice particles.
Primary material(s)
Experiment
Vis-NIR reflectance spectra of the sublimation of Water ice particles containing 1 wt.% Smectite in intra-mixture
Date begin
2014-07-31
Release date
2018-02-15 15:25:05 UTC+0000
Version (Date)
#1 (2018-02-15 15:25:05 UTC+0000, Updated: 2021-06-23 04:33:42 UTC+0000)
History
Date Mode Version Status Comments
2018-02-09 00:02:05 UTC+0000 first import #1 valid version new reflectance spectrum
Analysis
White Spectralon (99%) plates (Labsphere) were used as external and internal calibration standards.
Quality flag
4
Export suffix
_roi_smectite_intra1
Original file
20140730_swy-2_ice_hielscher_phase1_cube_roi_vis.sav
Format
sav