Pure CH4 (1) Ice at 30 K
| Sample Type | Ice |
|---|---|
| Components | CH4 |
| Ratio | 1 |
| Substrate | CsI |
| Reference Temperature | 30 K |
| Wavenumber (cm⁻¹) | 1000.2 - 3699.7 |
| Wavelength (µm) | 2.703 - 9.998 |
Methane (CH4) ice deposited at 10 K onto a cesium iodide (CsI) substrate, then warmed up to 30 K, and held at 30 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 30 K, by infrared transmission spectroscopy from 3700 to 1000 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.