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The Cosmic Ice Laboratory - IR Spectra

The Cosmic Ice Laboratory - Ammonia-Containing Ices


Files are here for figures from "Ammonia-Water Ice Laboratory Studies Relevant to Outer Solar System Surfaces" by Moore, M. H., Ferrante, R. F., Hudson, R. L., and Stone, J. N. (2007) Icarus, 190, 260-273.

IR Spectra of NH3-Containing Ices

For details, see Moore, M. H., Ferrante, R. F., Hudson, R. L., and Stone, J. N. (2007). Ammonia-Water Ice Laboratory Studies Relevant to Outer Solar System Surfaces. Icarus, 190, 260-273.

Figure Description Available Formats
Figure 1
NH3 compared to H2O+NH3 Ices

NH3 9 K
Amorphous Phase
ASCII [162 kb]
SPC [40 kb]
NH3 ~90 K
Transition Phase
ASCII [154 kb]
SPC [40 kb]
NH3 95 K
Cubic Phase
ASCII [255 kb]
SPC [61 kb]
H2O + NH3 9 K ASCII [53 kb]
SPC [15 kb]
H2O + NH3 90 K ASCII [50 kb]
SPC [14 kb]
H2O + NH3
130 K
ASCII [50 kb]
SPC [14 kb]
Figure 2
IR spectra of Ices made from H2O/NH3=0.5 gas-phase mixtures

Spectrum (a) ASCII [247 kb]
SPC [61 kb]
Spectrum (b) ASCII [247 kb]
SPC [61 kb]
Spectrum (c) ASCII [243 kb]
SPC [61 kb]
Spectrum (d) ASCII [246 kb]
SPC [61 kb]
Figure 3
This work compared to a hemihydrate reference spectrum

This Work ASCII [225 kb]
SPC [61 kb]
Reference Spectrum ASCII [25 kb]
SPC [7 kb]
Figure 4
This work compared to a monohydrate reference spectrum

This Work ASCII [286 kb]
SPC [70 kb]
Reference Spectrum ASCII [30 kb]
SPC [9 kb]
Figure 5
The thermal evolution of hemihydrate 2NH3 * H2O

Spectrum (a) ASCII [247 kb]
SPC [61 kb]
Spectrum (b) ASCII [249 kb]
SPC [61 kb]
Spectrum (c) ASCII [246 kb]
SPC [61 kb]
Spectrum (d) ASCII [280 kb]
SPC [70 kb]
Figure 6
A comparative look at near-IR spectra
from 5400 to 4000 cm-1

Amorphous NH3 ASCII [55 kb]
SPC [24 kb]
Transition NH3 ASCII [55 kb]
SPC [24 kb]
Cubic NH3 ASCII [255 kb]
SPC [61 kb]
2NH3 * H2O ASCII [225 kb]
SPC [61 kb]
NH3 * H2O ASCII [286 kb]
SPC [70 kb]
H2O+NH3 ASCII [50 kb]
SPC [14 kb]
Pure H2O ASCII [55 kb]
SPC [24 kb]
Figure 7
A comparative look at near-IR spectra
from 5600 to 4000 cm-1

H2O/NH3=0 ASCII [162 kb]
SPC [40 kb]
H2O/NH3=0.7 ASCII [55 kb]
SPC [16 kb]
H2O/NH3=1.6 ASCII [53 kb]
SPC [15 kb]
H2O/NH3=4.7 ASCII [50 kb]
SPC [14 kb]
H2O/NH3=14 ASCII [53 kb]
SPC [15 kb]
H2O/NH3=42 ASCII [53 kb]
SPC [14 kb]
H2O/NH3=57 ASCII [52 kb]
SPC [15 kb]
Figure 9
Changes in the near- and mid-IR spectrum of 2NH3 * H2O at 50 K as a function of radiation dose

Spectrum (a) ASCII [230 kb]
SPC [61 kb]
Spectrum (b) ASCII [229 kb]
SPC [61 kb]
Spectrum (c) ASCII [230 kb]
SPC [61 kb]
Spectrum (d) ASCII [230 kb]
SPC [61 kb]
Spectrum (e) ASCII [224 kb]
SPC [61 kb]
Spectrum (f) ASCII [224 kb]
SPC [61 kb]
Reference Spectrum ASCII [230 kb]
SPC [61 kb]
Figure 10
Changes in the IR spectrum of 2NH3 * H2O before and after an irradiation of 2.8 eV molecule-1

10 K Before ASCII [224 kb]
SPC [61 kb]
10 K After ASCII [224 kb]
SPC [61 kb]
50 K Before ASCII [230 kb]
SPC [61 kb]
50 K After ASCII [224 kb]
SPC [61 kb]
95 K Before ASCII [225 kb]
SPC [61 kb]
95 K After ASCII [224 kb]
SPC [61 kb]
Figure 13
IR spectra of an H2O + NH3 (7:1) ice at 10 K before and after irradiation to a dose of 7 eV molecule-1 at 10 K

Reference Spectrum ASCII [55 kb]
SPC [24 kb]
Before Irradiation ASCII [55 kb]
SPC [15 kb]
After Irradiation ASCII [53 kb]
SPC [15 kb]


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