MIR-FIR optical constants spectrum of crystalline CO2 ice at 15 K
- Title
- MIR-FIR optical constants spectrum of crystalline CO2 ice at 15 K
- DOI
- 10.26302/SSHADE/EXPERIMENT_BS_20130125_001
- Data reference
- Trotta, Frederic; Schmitt, Bernard (1996): Mid-IR and Far-IR optical constants of crystalline CO2 ice at 15 K. SSHADE/GhoSST (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_BS_20130125_001
- Publications
- Database
- Experimentalists
- Experiment type
- laboratory measurement
- Type
- optical constants
- Instrument
- Nicolet 800 – transmission Far-IR
- Sample holder
- PE-HD window 2mm thick cooled by He cryostat in UHV chamber with 2 PE-HD windows 5mm thick
- Standard medium
- vacuum
- Observation mode
- spectrum
- Spectral range type(s)
- FIR
- Valid spectral range(s)
-
Min - Max ($cm^{-1}$) Sampling ($cm^{-1}$) Resolution ($cm^{-1}$) Position accuracy ($cm^{-1}$) Absorption edge #1 54.0 - 630.0 0.482131 3.68 0.2 - Comments
- FIR spectrum (<630 cm-1) recorded with 1.92 cm-1 sampling resampled at 0.482131 cm-1
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 $mm$
- 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 #1 630.0 - 4800.0 0.482131 0.92 0.05
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 and Far-IR optical constants of crystalline CO2 ice at 15 K
- Date begin
- 1996-01-01
- Release date
- 2018-01-31 23:51:01 UTC+0000
- Version (Date)
- #1 (2018-01-31 23:51:01 UTC+0000, Updated: 2020-01-03 09:00:38 UTC+0000)
- History
-
Date Mode Version Status Comments 2017-11-17 17:16:56 UTC+0000 first import #1 valid version 2013-01-25: new crystalline CO2 optical constants spectrum 15K (MIR+FIR)
- Analysis
- Iterative inversion of n and k with full optical model of the film+substrate + Kramers-Kronig analysis using both MIR and FIR data over 50-5100cm-1 range and n(15800cm-1)= 1.43 (F. Trotta thesis 1996). Noise removed between bands (k set to 0).
- Quality flag
- 4
- Validator(s)