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CO₂ Ice at 8 K

Ice Datasets
Description
Sample Type Ice
Components CO₂
Ratio 1
Substrate KBr or CsI
Phase / State Amorphous
Reference Temperature 8 K
Wavenumber (cm⁻¹) 500 - 4000
Wavelength (µm) 2.5 - 20

Amorphous carbon dioxide (CO₂) ice deposited at 8 K onto a potassium bromide (KBr) or cesium iodide (CsI) substrate, and held at 120 K during spectroscopic measurements.

The real (n) and imaginary (k) parts of the complex index of refraction were determined using optical measurements done at a temperature of 8 K, by infrared transmission spectroscopy from 4000 to 500 cm⁻¹ with a resolution of 1 cm⁻¹.

The absorption (A) spectrum of a 0.13-µm-thick sample is provided in this dataset.

More information can be found in the publication and on the OCdb contributor's page.

Download data (csv)

n,k,A,All

References

Any use of this data should recognize the parent publication(s):

Gerakines, P. A. and Hudson, R. L. (2020) 'Modified Algorithm and Open-source Computational Package for the Determination of Infrared Optical Constants Relevant to Astrophysics', The Astrophysical Journal, 901:52, 10 pp.

https://doi.org/10.3847/1538-4357/abad39

n/k Values

A Values

Compatible Datasets (i.e., same molecule, phase, and temperature) are marked with *

Select Chemical Ratio Phase / State T (K) Wavelength
Min (µm)		 Wavelength
Max (µm)		 Compatible n k Reference
CO₂ 1 10 2.5 19.997 ✓ ✓ Hudgins et al. (1993)
CO₂ 1 10 2.504 19.184 ✓ ✓ Ehrenfreund et al. (1997)
CO₂ 1 12.5 2.381 20 ✓ ✓ Baratta and Palumbo (1998)
CO₂ 1 28 25.005 1602.533 ✓ ✓ Gavdush et al. (2022)
CO₂ 1 30 2.5 19.997 ✓ ✓ Hudgins et al. (1993)
CO₂ 1 4.2 0.546 0.546 ✓ - Kruger and Ambs (1959)
CO₂ 1 50 2.5 19.997 ✓ ✓ Hudgins et al. (1993)
CO₂ 1 50 2.504 18.231 ✓ ✓ Ehrenfreund et al. (1997)
CO₂ 1 70 2.5 19.997 ✓ ✓ Hudgins et al. (1993)
CO₂ 1 77 0.546 0.546 ✓ - Kruger and Ambs (1959)