Spectrum Absorbance MIR spectrum of amorphous NH3 ice formed at 25 K with a deposition rate of 0.38 nm.s-1 - Thickness = 120 nm Spectrum Absorbance MIR spectrum of amorphous NH3 ice formed at 25 K with a deposition rate of 0.38 nm.s-1 - Thickness = 278 nm Spectrum Absorbance MIR spectrum of amorphous NH3 ice formed at 25 K with a deposition rate of 0.38 nm.s-1 - Thickness = 434 nm Spectrum Absorbance MIR spectrum of amorphous NH3 ice formed at 25 K with a deposition rate of 0.38 nm.s-1 - Thickness = 584 nm Spectrum Absorbance MIR spectrum of amorphous NH3 ice formed at 25 K with a deposition rate of 0.38 nm.s-1 - Thickness = 730 nm

Spectrum Absorbance MIR spectrum of amorphous NH3 ice formed at 25 K with a deposition rate of 0.024 nm.s-1 - Thickness = 100 nm Spectrum Absorbance MIR spectrum of amorphous NH3 ice formed at 25 K with a deposition rate of 0.024 nm.s-1 - Thickness = 203 nm Spectrum Absorbance MIR spectrum of amorphous NH3 ice formed at 25 K with a deposition rate of 0.024 nm.s-1 - Thickness = 304 nm Spectrum Absorbance MIR spectrum of amorphous NH3 ice formed at 25 K with a deposition rate of 0.024 nm.s-1 - Thickness = 404 nm Spectrum Absorbance MIR spectrum of amorphous NH3 ice formed at 25 K with a deposition rate of 0.024 nm.s-1 - Thickness = 502 nm Spectrum Absorbance MIR spectrum of amorphous NH3 ice formed at 25 K with a deposition rate of 0.024 nm.s-1 - Thickness = 600 nm Spectrum Absorbance MIR spectrum of amorphous NH3 ice formed at 25 K with a deposition rate of 0.024 nm.s-1 - Thickness = 696 nm