Mid-IR and Far-IR optical constants of crystalline CO2 ice at 15 K | GhoSST

Experiment

Title: Mid-IR and Far-IR optical constants 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

Owner

Database(s)

GhoSST

Experimentalists

Spectra preview

Experiment type

Type(s): laboratory measurement
Description: Mid and Far-IR (54-4800cm $^{-1}$ ) optical constants of crystalline $CO_2$ ice at 15 K
Number of spectra: 1

Variable parameters

Comments: merged Mid-IR + Far-IR optical constants spectra at 15K

Location

Laboratory: Laboratoire de Glaciologie et Géophysique de l'Environnement (LGGE)

Instrument #1

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

Spectral parameters

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

Angular parameters

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°

Polarization parameters

Illumination

Observation

Comments: possibly partly polarized beam by beamsplitter

Spatial parameters

Observation mode: single spot
Image size: 8.0 x 8.0 $mm$

Instrument #2

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