Spectrum

Far-IR optical constants spectrum of H2O Ia at 87.5 K

Title
Far-IR optical constants spectrum of H2O Ia at 87.5 K
DOI
10.26302/SSHADE/EXPERIMENT_BS_20130120_003
Data reference
Schmitt, Bernard; Trotta, Frederic (1991): Far-IR optical constants of amorphous H2O Ia at different temperatures and annealing. SSHADE/GhoSST (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_BS_20130120_003
Publications
Experiment type
laboratory measurement
Type
optical constants
Comments
progressive deviation in n and k can occur above 400 cm-1 because Mid-IR spectrum not taken into account in KK analysis
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 90.0 - 635.0
Scan number
50
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
Far-IR optical constants of amorphous H2O Ia at different temperatures and annealing
Date begin
1995-11-12
Release date
2018-01-31 23:51:01 UTC+0000
Version (Date)
#1 (2017-11-17 17:16:56 UTC+0000, Updated: 2020-01-03 08:45:20 UTC+0000)
History
Date Mode Version Status Comments
2017-11-17 17:16:56 UTC+0000 first import #1 valid version 2013-02-20: new H2O Ia optical constants spectrum 87.5K (far-IR)
Analysis
Iterative inversion of n and k with full optical model of the film+substrate + Kramers-Kronig analysis over 100-650 cm-1 range (without using MIR data) and n(15800cm-1)= 1.27 (F. Trotta thesis 1996)
Quality flag
4
Validator(s)