Mid-IR reflectance spectrum of raw chips of the Oued Chebeika CI chondrite recorded after 40 minutes
- Title
- Mid-IR reflectance spectrum of raw chips of the Oued Chebeika CI chondrite recorded after 40 minutes
- DOI
- 10.26302/SSHADE/EXPERIMENT_LB_20241211_001
- Data reference
- Bonal, Lydie; Beck, Pierre; Poch, Olivier (2024): Vis-NIR and Mid-IR reflectance spectra, Mid-IR transmission and Raman spectra of several preparations of the Oued Chebeika 002 meteorite (CI chondrite). SSHADE/GhoSST (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_LB_20241211_001
- Publications
- Database
- Experimentalists
- Experiment type
- laboratory measurement
- Type
- reflectance factor
- Intensity unit
- no unit
- Instrument
- Brucker Vertex 70 #2 – reflection Mid-IR
- Sample holder
- aluminum sample holder
- Standard medium
- vacuum
- Observation mode
- spectrum
- Spectral range type(s)
- NIR, MIR
- Valid spectral range(s)
-
Min - Max () Sampling () Resolution () Position accuracy () Absorption edge #1 2.3 - 18.0 0.00056 - Comments
- measured from 0.54 μm to 2.3 μm with SHINE and from 2.3 to 18 μm with Vertex70v instrument
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
- biconical
- Observation mode
- fixed angles
- Incidence angle
- 0.0°
- Emergence angle
- 30.0°
- Observation mode
- single spot
- Resolutions
- 1.0
- Experiment
- Vis-NIR and Mid-IR reflectance spectra, Mid-IR transmission and Raman spectra of several preparations of the Oued Chebeika 002 meteorite (CI chondrite)
- Date begin
- 2024-11-25
- Release date
- 2025-03-28 10:26:10 UTC+0000
- Version (Date)
- #1 (2025-03-28 10:26:10 UTC+0000, Updated: 2025-03-28 10:26:10 UTC+0000)
- History
-
Date Mode Version Status Comments 2025-01-08 13:30:19 UTC+0000 first import #1 valid version
- Analysis
- Spectra were measured under a dry air purge, and calibrated using two reference surfaces: a reflective diffuser made of a 120 grit protected gold coating surface purchased from Edmund Optics (ref1), and a 1500 grit uncoated gold reflective ground glass diffuser purchased from Thorlabs (ref2). The former reference surface possesses some absorption features due to it protective coating, but it is spectrally flat over the studied wavelength range, whereas the latter reference surface is featureless but is less reflective as the wavelength increases. We measured a “[ref2]/[ref1]” spectrum and then computed a “[ref2]/[coating-free ref1]” spectrum by replacing the spectral ranges affected by ref1 absorption bands by a polynomial interpolation. Then, we multiplied the spectrum of “[OC 002]/[ref2]” by “[ref2]/[coating-free ref1]” to obtain the spectrum “[OC 002]/[coating-free ref1]”, free of spectral artifact
- Quality flag
- 4
- Validator(s)