FIR optical constants spectrum of NH3 crystalline at 75 K
- Title
- FIR optical constants spectrum of NH3 crystalline at 75 K
- Data reference
- Trotta, Frederic; Schmitt, Bernard (1995): FIR optical constants of NH3 crystalline at 75 K. SSHADE/GhoSST (OSUG Data Center). Dataset/Spectral Data.
- 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
- 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 #1 200.0 - 670.0 1.92940889106009 4.0 0.2 - Scan number
- 138
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
- 2.21237390820801°
- Resolution illumination
- 15.0°
- Resolution observation
- 20.0°
Illumination
- Type of polarization
- no
Observation
- Type of polarization
- no
- Comments
- possibly partly polarized beam by beamsplitter
- Observation mode
- single spot
- Image size
- 8.0 x 8.0 $mm$
- Resolutions
- 8.0 ${\pm}$ 1.0 $mm$
- Experiment
- FIR optical constants of NH3 crystalline at 75 K
- Date begin
- 1996-01-14
- Release date
- 2018-01-31 23:51:01 UTC+0000
- Version (Date)
- #1 (2018-01-31 23:51:01 UTC+0000)
- History
-
Date Mode Version Status Comments 2017-11-17 17:16:56 UTC+0000 first import #1 valid version 2013-02-05: new crystalline NH3 optical constants spectrum 75K (FIR)
- Analysis
- Iterative inversion of n and k with full optical model of the film+substrate + Kramers-Kronig analysis over 175-680 cm-1 range (using MIR data of amorphous NH3 15K) and n(15800cm-1)= 1.42 (F. Trotta thesis 1996)
- Quality flag
- 4
- Validator(s)