NH₃ Ice at 15 K
| Sample Type | Ice |
|---|---|
| Components | NH₃ |
| Ratio | 1 |
| Substrate | Si |
| Phase / State | Amorphous |
| Reference Temperature | 15 K |
| Wavenumber (cm⁻¹) | 4000.807 - 7000.689 |
| Wavelength (µm) | 1.428 - 2.499 |
Amorphous ammonia (NH₃) ice deposited at 15 K onto a silicon (Si) substrate, and held at 15 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 15 K, by normal-incidence infrared transmission spectroscopy from 7000 to 4000 cm⁻¹ with a resolution of 2 cm⁻¹.
The accuracy of the n and k indices is estimated at ~1%, except when k < 0.01, which has larger errors.
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):
Zanchet, A., Rodríguez-Lazcano, Y., Gálvez, Ó., Herrero, V. J., Escribano, R. and Maté, B. (2013) 'Optical Constants of NH₃ and NH₃:N₂ Amorphous Ices in the Near-Infrared and Mid-Infrared Regions', The Astrophysical Journal, 777:26, 11 pp.
n/k Values
Compatible Datasets (i.e., same molecule, phase, and temperature) are marked with *
| Select | Chemical | Ratio | Phase / State | T (K) | Wavelength Min (µm) |
Wavelength Max (µm) |
Compatible | n | k | Reference |
|---|---|---|---|---|---|---|---|---|---|---|
|
|
NH₃ | 1 | Amorphous | 15 | 2.499 | 14.284 | * | ✓ | ✓ | Zanchet et al. (2013) |
|
|
NH₃ | 1 | Amorphous | 10 | 1.667 | 15.873 | ✓ | ✓ | Hudson et al. (2022) | |
|
|
NH₃ | 1 | Amorphous | 23 | 2.5 | 15.385 | ✓ | ✓ | Mukai and Krätschmer (1986) | |
|
|
NH₃ | 1 | Amorphous | 30 | 1.428 | 2.499 | ✓ | ✓ | Zanchet et al. (2013) | |
|
|
NH₃ | 1 | Amorphous | 30 | 2.499 | 14.284 | ✓ | ✓ | Zanchet et al. (2013) | |
|
|
NH₃ | 1 | Amorphous | 40 | 1.429 | 22.727 | ✓ | ✓ | Roser et al. (2021) |