NIR reflectance spectrum (i = 0°, e = 30°) of powdered magnetite
- Title
- NIR reflectance spectrum (i = 0°, e = 30°) of powdered magnetite
- DOI
- 10.26302/SSHADE/EXPERIMENT_LB_20250114_001
- Data reference
- Valantinas, Adomas; Beck, Pierre; Poch, Olivier (2023): NIR reflectance spectra of several powdered iron oxides. SSHADE/GhoSST (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_LB_20250114_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
- Valid spectral range(s)
-
Min - Max (nm) Sampling (nm) Resolution (nm) Position accuracy (nm) Absorption edge #1 2000.0 - 4500.0 5e-08 2.5e-08 - Comments
- sampling = 2 cm−1 and resolution = 4 cm−1 - measured from 2 to 4.5 μm with Vertex70v instrument and with other instrument(s) in different institute(s) for the complementary spectral range
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 mm
- Experiment
- NIR reflectance spectra of several powdered iron oxides
- Date begin
- 2023-03-01
- Release date
- 2025-01-27 09:39:29 UTC+0000
- Version (Date)
- #1 (2025-01-27 09:39:29 UTC+0000, Updated: 2025-01-27 09:39:29 UTC+0000)
- History
-
Date Mode Version Status Comments 2025-01-14 15:41:04 UTC+0000 first import #1 valid version
- Analysis
- A reflective diffuser made of a 120 grit protected gold coating surface purchased from Edmund Optics was used to calibrate the spectrum of the sample. The spectrum of this reflective diffuser possesses some faint absorption features due to the protective coating (around 2.9 to 3.5 µm, 6 µm, 8-10 µm), but it is spectrally flat over the studied wavelength range
- Quality flag
- 3