Pure CH4 (1) Ice at 31 K
| Sample Type | Ice |
|---|---|
| Components | CH4 |
| Ratio | 1 |
| Substrate | KBr or CsI |
| Reference Temperature | 31 K |
| Wavenumber (cm⁻¹) | 499.99 - 5000 |
| Wavelength (µm) | 2 - 20 |
Crystalline methane (CH4) ice deposited at 31 K onto a potassium bromide (KBr) or cesium iodide (CsI) substrate, and held at 31 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 31 K, by infrared transmission spectroscopy from 5000 to 500 cm⁻¹ with a resolution of 1 cm⁻¹.
The absorption spectrum of a 0.51-µm-thick sample is provided in this dataset.
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):
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.