Mid-IR optical constants spectrum of crystalline C6H6 ice at 130K
- Title
- Mid-IR optical constants spectrum of crystalline C6H6 ice at 130K
- DOI
- 10.26302/SSHADE/EXPERIMENT_BS_20170830_001
- Data reference
- Schmitt, Bernard; Vinatier, Sandrine; Bernard, Jean-Michel (2015): Mid-IR transmission and optical constants spectra of crystalline C6H6 at 130K. SSHADE/GhoSST (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_BS_20170830_001
- Publications
- Comments
- spectrum not displayed in a figure
- Database
- Experimentalists
- Experiment type
- laboratory measurement
- Type
- optical constants
- Comments
- These optical constants are a first guess and need more thorough iterative interface reflections/interferences correction and k,n determination
- Instrument
- Nicolet 800 – transmission Mid-IR
- Sample holder
- CsI window 2mm thick cooled by He cryostat in UHV chamber with 2 CsI windows 5mm thick
- Standard medium
- vacuum
- Observation mode
- spectrum
- Spectral range type(s)
- MIR
- Valid spectral range(s)
-
Min - Max ($cm^{-1}$) Sampling ($cm^{-1}$) Resolution ($cm^{-1}$) Position accuracy ($cm^{-1}$) Absorption edge #1 400.0 - 4200.0 0.482146 0.96 0.05 - Scan number
- 100
Definition: incidence and emergence angles are positive with origin at nadir. Emergence angle in transmission is larger than 90° (=180°-i).
- Observation geometry
- direct
- Observation mode
- fixed angles
- Incidence angle
- 0.0°
- Emergence angle
- 180.0°
- Azimuth angle
- 0.0°
- Phase angle
- 180.0°
- Resolution illumination
- 15.0°
- Resolution observation
- 20.0°
Illumination
Observation
- Comments
- possibly partly polarized beam by beamsplitter
- Observation mode
- single spot
- Image size
- 8.0 x 8.0 $mm$
- Experiment
- Mid-IR transmission and optical constants spectra of crystalline C6H6 at 130K
- Parent spectrum
- Date begin
- 2015-10-06
- Release date
- 2018-02-24 08:23:21 UTC+0000
- Version (Date)
- #1 (2018-02-24 08:23:21 UTC+0000, Updated: 2020-01-02 06:22:53 UTC+0000)
- History
-
Date Mode Version Status Comments 2017-11-17 17:16:56 UTC+0000 first import #1 valid version 2015-10-06: new crystalline C6H6 optical constants spectrum 130K (MIR)
- Analysis
- Polyline baseline correction of the raw absorbance spectrum of a thin film of solid C2H6 (1.65 µm thickness) trying to correct the low frequency interference fringe and the sharp spectral variations of the reflection at the thin film interfaces seen in the strong fundamental bands below 1520 $cm^{-1}$. Then 'k' calculated from the absorption coefficient derived from this corrected absorbance spectrum and 'n' determined by substractive Kramers-Kronig algorithm constrained with a visible real refactive index n = 1.54 at 632.8 nm
- Quality flag
- 4
- Validator(s)