H₂O Ice at <70 K
| Sample Type | Ice |
|---|---|
| Components | H₂O |
| Ratio | 1 |
| Substrate | Al₂O₃, KBr or CsI |
| Phase / State | High-density amorphous |
| Reference Temperature | <70 K |
| Wavenumber (cm⁻¹) | 3800.723 - 8998.87 |
| Wavelength (µm) | 1.111 - 2.631 |
High-density amorphous water (H₂O) ice (Iₐh ice) deposited at a temperature <70 K onto a aluminum oxide (Al₂O₃), potassium bromide (KBr) or cesium iodide (CsI) substrate, and held at a temperature <70 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 <70 K and a pressure of ~1E-8 mbar, by infrared transmission spectroscopy from 1.1 to 2.6 µm.
The transmission (T) spectrum is also provided in this dataset.
k spectrum should be considered a lower limit. The relative uncertainty in k is strongest in the transparent regions near 1.35 and 1.8 μm, while the relative uncertainty is very small where the absorptions are strong.
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):
Mastrapa, R. M., Bernstein, M. P., Sandford, S. A., Roush, T. L., Cruikshank, D. P. and Dalle Ore, C. M. (2008) 'Optical constants of amorphous and crystalline H₂O-ice in the near infrared from 1.1 to 2.6 µm', Icarus, 197, pp. 307-320.