CO₂:CH₄ (20:1) Ice at 50 K
| Sample Type | Ice |
|---|---|
| Components | CO₂:CH₄ |
| Ratio | 20:1 |
| Substrate | CsI |
| Phase / State | |
| Reference Temperature | 50 K |
| Wavenumber (cm⁻¹) | 3.846 - 3799.6 |
| Wavelength (µm) | 2.632 - 2599.8 |
Carbon dioxide:methane (CO₂:CH₄ with a 20:1 ratio) ice mixture deposited at 10 K onto a cesium iodide (CsI) substrate, then warmed up to 50 K, and held at 50 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 50 K, by infrared transmission spectroscopy from 3800 to 500 cm⁻¹ with a resolution of 1 cm⁻¹ across the CH₄ features and 2 cm⁻¹ across the rest of the spectrum.
More information can be found in the publication and on the OCdb contributor's page.
Any use of this data should recognize the parent publication(s):
Hudgins, D. M., Sandford, S. A., Allamandola, L. J. and Tielens, A. G. G. M. (1993) 'Mid- and Far-Infrared Spectroscopy of Ices: Optical Constants and Integrated Absorbances', The Astrophysical Journal Supplement Series, 86, pp. 713-870.