NIR optical constants spectrum of SO2 crystal at 125 K
- Title
- NIR optical constants spectrum of SO2 crystal at 125 K
- DOI
- 10.26302/SSHADE/EXPERIMENT_BS_20130124_002
- Data reference
- Schmitt, Bernard (1994): NIR Optical constants spectrum of SO2 crystal at 125 K. SSHADE/GhoSST (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_BS_20130124_002
- Publications
- Associated band lists
- Database
- Experimentalists
- Experiment type
- laboratory measurement
- Type
- optical constants
- Comments
- MIR fundamental bands region (< 2000cm-1) is missing
- Instrument
- Nicolet 800 – transmission Near-IR
- Sample holder
- MgF2 window (films) + closed cell 10 mm thick with 2 MgF2 windows (crystal)
- Standard medium
- vacuum
- Observation mode
- spectrum
- Spectral range type(s)
- NIR
- Valid spectral range(s)
-
Min - Max ($cm^{-1}$) Sampling ($cm^{-1}$) Resolution ($cm^{-1}$) Position accuracy ($cm^{-1}$) Absorption edge #1 2100.0 - 5100.0 0.4821314 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
- Resolutions
- 2.5 ${\pm}$ 0.5 $mm$
- Name
- SO2 crystalline
- Experiment
- NIR Optical constants spectrum of SO2 crystal at 125 K
- Date begin
- 1994-01-01
- Release date
- 2018-01-31 23:51:01 UTC+0000
- Version (Date)
- #1 (2018-01-31 23:51:01 UTC+0000, Updated: 2020-02-01 13:57:22 UTC+0000)
- History
-
Date Mode Version Status Comments 2017-11-17 17:16:56 UTC+0000 first import #1 valid version 2013-01-24: new SO2 optical constants spectrum at 125K (NIR)
- Analysis
- The imaginary part 'k' of the optical constants are derived from the absorption coefficient 'alpha' of Schmitt et al. 1994 (Fig. 7) in the limit of small k values (k < $1~10^{-2}$), i.e., with k = alpha/(4*pi*nu). Absorption coefficient is set to $8~10^{-4} cm^{-1}$ outside bands. The real part 'n' is set constant and equal to the visible value (n = 1.50)
- Quality flag
- 4
- Validator(s)