Spectrum

Optical constants of dolomite, polarization perpendicular to the c-axis, MIR/FIR at 200 K

Title
Optical constants of dolomite, polarization perpendicular to the c-axis, MIR/FIR at 200 K
DOI
10.26302/SSHADE/EXPERIMENT_SB_20210115_001
Data reference
Posch, Thomas; Mutschke, Harald; Henning, Thomas (2005): T-dependent optical constants of calcite and dolomite. SSHADE/DOCCD (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_SB_20210115_001
Publications
Experiment type
laboratory measurement
Type
optical constants
Instrument
BRUKER 113v – reflection Mid-IR
Standard medium
vacuum
Observation mode
spectrum
Spectral range type(s)
MIR
Valid spectral range(s)
Min - Max (${\mu}m$) Sampling (${\mu}m$) Resolution (${\mu}m$) Position accuracy (${\mu}m$) Absorption edge
#1 2.0 - 25.0
Scan number
64
Comments
The MIR reflection measurements were performed at room temperature only (without cryostat).
Observation geometry
specular
Observation mode
fixed angles
Incidence angle
12.0°
Emergence angle
12.0°
Resolution illumination
6.0°
Resolution observation
6.0°
Illumination
Type of polarization
no
Observation
Type of polarization
linear
Type of polarizer
wire-grid polarizer (KRS5)
Polarization angle
90.0°
Comments
polarization perpendicular to the c-axis of the crystal
Observation mode
single spot
Resolutions
5.0 $mm$
Instrument
BRUKER 113v – reflection Far-IR
Sample holder
A continuous-flow liquid helium cryostat (Cryovac) was used for temperatures below 300 K.
Standard medium
vacuum
Observation mode
spectrum
Spectral range type(s)
FIR
Valid spectral range(s)
Min - Max (${\mu}m$) Sampling (${\mu}m$) Resolution (${\mu}m$) Position accuracy (${\mu}m$) Absorption edge
#1 15.0 - 200.0
Scan number
64
Observation geometry
specular
Observation mode
fixed angles
Incidence angle
12.0°
Emergence angle
12.0°
Resolution illumination
6.0°
Resolution observation
6.0°
Illumination
Type of polarization
no
Observation
Type of polarization
linear
Type of polarizer
wire-grid polarizer (PE)
Polarization angle
90.0°
Comments
polarization perpendicular to the c-axis of the crystal
Observation mode
single spot
Resolutions
5.0 $mm$
Experiment
T-dependent optical constants of calcite and dolomite
Date begin
2005-02-22
Release date
2021-02-10 12:23:23 UTC+0000
Version (Date)
#1 (2021-02-10 12:23:23 UTC+0000, Updated: 2021-02-10 12:23:23 UTC+0000)
History
Date Mode Version Status Comments
2021-01-15 11:45:44 UTC+0000 first import #1 valid version first version
Analysis
The optical constants in the MIR/FIR were determined by a Lorentzian oscillator fit of the merged reflectance spectra. In the MIR only the room temperature reflectance spectrum was used.
Quality flag
4