Spectrum

NIR reflectance spectrum of sublimating CO2 snow with 1.5wt% H2O ice - t9 (t=90min)

Title
NIR reflectance spectrum of sublimating CO2 snow with 1.5wt% H2O ice - t9 (t=90min)
DOI
10.26302/SSHADE/EXPERIMENT_BS_20191226_001
Data reference
Philippe, Sylvain; Schmitt, Bernard; Beck, Pierre; Brissaud, Olivier (2014): NIR reflectance spectra of two mixtures of CO2 snow and H2O ice (0.1%, 1.5%) submitted to slow sublimation under illumination. SSHADE/GhoSST (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_BS_20191226_001
Publications
Experiment type
laboratory measurement
Type
reflectance factor
Instrument
SHINE Spectro-Gonio bidirectional reflection Vis-NIR
Sample holder
P-T controled copper cylindrical cell closed by sapphire windows and cooled by helium cryocooler (CarboN-IR environmental cell)
Standard medium
vacuum
Observation mode
spectrum
Spectral range type(s)
NIR
Valid spectral range(s)
Min - Max (${\mu}m$) Sampling (${\mu}m$) Resolution (${\mu}m$) Position accuracy (${\mu}m$) Absorption edge
#1 1.0 - 1.59 0.01 0.0095 0.001
#2 1.6 - 2.99 0.01 0.0191 0.002
#3 3.0 - 3.99 0.01 0.0388 0.004
Scan number
10
Comments
using 1.5mm slit
Observation geometry
bidirectional
Observation mode
fixed angles
Incidence angle
0.0°
Emergence angle
15.0°
Azimuth angle
0.0°
Phase angle
15.0°
Resolution illumination
0.1°
Resolution observation
4.1°
Illumination
Observation
Comments
polarization varying between gratings
Observation mode
single spot
Resolutions
20.0 $mm$
Name
H2O ice layer over CO2 snow with 1.5% H2O ice
Changes
$CO_2$ sublimation: growth of top H2O layer. Surface area: 100%, thickness: 286$^{+10}_{-8}$µm, mean grain size: 287$^{+25}_{-16}$µm; 1µm frost: 0.97$^{+0.19}_{-0.18}$%
Experiment
NIR reflectance spectra of two mixtures of CO2 snow and H2O ice (0.1%, 1.5%) submitted to slow sublimation under illumination
Date begin
2014-05-23 11:17:00
Date end
2014-05-23 13:04:00
Release date
2020-01-28 09:15:39 UTC+0000
Version (Date)
#1 (2020-01-28 09:15:39 UTC+0000, Updated: 2020-03-18 06:40:54 UTC+0000)
History
Date Mode Version Status Comments
2020-01-27 22:33:04 UTC+0000 first import #1 valid version
Analysis
raw bidirectional reflectance spectrum calibrated: 1) in the 1-2.5µm range with "Spectralon 99%" standard (LabSphere (c)) measured under same geometry using its absolute BRDF and 2) in the 2.5-4.0.µm range with "Infragold" (LabSphere (c)) using its relative spectral reflectance
Quality flag
4
Validator(s)