Vis-NIR reflectance spectrum of 0.67% PAHs mixed with CO2 snow - t=0
- Title
- Vis-NIR reflectance spectrum of 0.67% PAHs mixed with CO2 snow - t=0
- DOI
- 10.26302/SSHADE/EXPERIMENT_BS_20181101_001
- Data reference
- Campbell, Jacqueline; Schmitt, Bernard; Beck, Pierre; Brissaud, Olivier (2017): Vis-NIR reflectance spectra of a mix of three PAHs, PAHs mixed with CO2 snow and PAHs mixed with JSC Mars-1 simulant. SSHADE/CSS (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_BS_20181101_001
- Publications
- Database
- Experimentalists
- Experiment type
- laboratory measurement
- Type
- reflectance factor
- Instrument
- SHINE Spectro-Gonio bidirectional reflection Vis-NIR
- Sample holder
- Aluminum cylindrical cell (48 mm diameter, 20 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 (${\mu}m$) Sampling (${\mu}m$) Resolution (${\mu}m$) Position accuracy (${\mu}m$) Absorption edge #1 0.7 - 1.59 0.01 0.0095 0.001 #2 1.6 - 2.19 0.01 0.0191 0.002 - Scan number
- 10
- Comments
- using 1.5mm slit
Definition: incidence and emergence angles are positive with origin at nadir, and vary in same direction. Azimuth origin (increasing clockwise) is for i = e (opposition geometry).
- Observation geometry
- bidirectional
- Observation mode
- fixed angles
- Incidence angle
- 0.0°
- Emergence angle
- 20.0°
- Azimuth angle
- 0.0°
- Phase angle
- 20.0°
- Resolution illumination
- 0.1°
- Resolution observation
- 4.1°
Illumination
Observation
- Comments
- polarization varying between gratings
- Observation mode
- single spot
- Resolutions
- 20.0 $mm$
- Name
- CO2 snow with 0.67% of a PAH mix
- Changes
- $CO_2$ sublimation: sample thickness decreased from 18 to 8 mm during spectrum - possible strong increase of PAH concentration
- Comments
- already 2 mm CO2 sublimated at start of spectrum - then rapid sublimation of 10 mm. Sample in cell about 30min before first spectrum, not taken into account in 'time'. Full spectrum takes about 1h
- Experiment
- Vis-NIR reflectance spectra of a mix of three PAHs, PAHs mixed with CO2 snow and PAHs mixed with JSC Mars-1 simulant
- Date begin
- 2017-10-18 11:26:00
- Date end
- 2017-10-18 12:26:00
- Release date
- 2021-05-25 12:01:01 UTC+0000
- Version (Date)
- #1 (2021-05-25 12:01:01 UTC+0000, Updated: 2021-05-25 12:01:01 UTC+0000)
- History
-
Date Mode Version Status Comments 2019-11-11 11:10:50 UTC+0000 first import #1 valid version
- Analysis
- raw bidirectional reflectance spectrum calibrated: 1) in the 0.7-2.2µm range with "Spectralon 99%" standard (LabSphere (c)) measured under same geometry using its absolute BRDF
- Quality flag
- 4
- Validator(s)