CH₄ Ice at 20 K
| Sample Type | Ice |
|---|---|
| Components | CH₄ |
| Ratio | 1 |
| Substrate | Si |
| Phase / State | Crystalline |
| Reference Temperature | 20 K |
| Wavenumber (cm⁻¹) | 5000 - 25000 |
| Wavelength (µm) | 0.4 - 2 |
Crystalline methane (CH₄) ice deposited at 10 K onto a silicon (Si) substrate, then annealed at 20 K, and held at 20 K during spectroscopic measurements.
The real part (n) of the complex index of refraction was calculated from 0.4 to 2.0 μm from the refractive indices of liquid CH₄ at 110 K and the densities of liquid and solid CH₄.
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):
Khare, B. N., Thompson, W. R., Sagan, C., Arakawa, E. T., Bruel, C., Judish, J. P., Khanna, R. K. and Pollack, J. B. (1990) 'Optical Constants of Solid Methane', pp. 327-339 in NASA Conference Publication 3077, First International Conference on Laboratory Research for Planetary Atmospheres, Proceedings of a conference held at Bowie State University, Bowie, Maryland, October 25-27, 1989.