- Title
- Vis-NIR reflectance spectra of CH3OH:H2O mixtures at 35 and 60 K irradiated with H+ 30 keV
- DOI
- 10.26302/SSHADE/EXPERIMENT_ZED_20250609_01
- Data reference
- Henault, Elsa (2021): Vis-NIR reflectance spectra of CH3OH:H2O mixtures at 35 and 60 K irradiated with H+ 30 keV. SSHADE/DAYSY (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_ZED_20250609_01
- Database(s)
- Experimentalists
- Type(s)
- laboratory measurement
- Description
- Vis-NIR spectra of CH3OH:H2O mixtures at 35 and 60 K irradiated with H+ 30 keV.
- Number of spectra
- 6
- Variable type(s)
-
- irradiation dose
- sample composition
- Comments
- We irradiated CH3OH:H2O ices mixtures on the SIDONIE isotope separator at IJCLab (Orsay, France) using H+ ions at 30 keV.Reference spectra were collected on the gold. Spectra are normalized to unity at 1 µm where the junction is made between the visible and IR detectors. Spectral slopes above ~1.75 µm are not reliable but the data is shown as this spectral region contains the absorption bands of methanol and water.
- Laboratory
- Institut d'Astrophysique Spatiale (IAS)
- Instrument
- Bruker Tensor - reflection Near-IR
- Standard medium
- vacuum
- Observation mode
- spectrum
- Spectral range type(s)
- NIR
- Valid spectral range(s)
-
Min - Max (μm) Sampling (μm) Resolution (μm) Position accuracy (μm) Absorption edge #1 1.0 - 2.5 0.1 0.05 - Comments
- The resolution changes with the wavelenght.
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
- 10.0°
- Emergence angle
- 10.0°
- Azimuth angle
- 0.0°
- Phase angle
- 0.0°
- Observation mode
- single spot
- Image size
- 4.0 x 4.0 mm
- Standard medium
- vacuum
- Observation mode
- spectrum
- Spectral range type(s)
- Vis
- Valid spectral range(s)
-
Min - Max (μm) Sampling (μm) Resolution (μm) Position accuracy (μm) Absorption edge #1 0.6 - 1.0 0.01 0.005 - Comments
- The resolution changes with the wavelenght.
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
- 10.0°
- Emergence angle
- 10.0°
- Azimuth angle
- 0.0°
- Phase angle
- 0.0°
- Observation mode
- single spot
- Image size
- 4.0 x 4.0 mm
- Date begin
- 2021-11-10
Versions
- Release date
- 2025-06-16 13:06:47+0000 UTC
- Version (Date)
- #1 (2025-06-16 13:06:47+0000 UTC, Updated: 2025-06-18 14:27:59+0000 UTC)