Spectrum Absorbance MIR spectrum of amorphous NH3 ice formed at 25 K with a deposition rate of 0.037 nm.s-1 - Thickness = 51 nm Spectrum Absorbance MIR spectrum of amorphous NH3 ice formed at 25 K with a deposition rate of 0.037 nm.s-1 - Thickness = 113 nm Spectrum Absorbance MIR spectrum of amorphous NH3 ice formed at 25 K with a deposition rate of 0.037 nm.s-1 - Thickness = 172 nm Spectrum Absorbance MIR spectrum of amorphous NH3 ice formed at 25 K with a deposition rate of 0.037 nm.s-1 - Thickness = 229 nm Spectrum Absorbance MIR spectrum of amorphous NH3 ice formed at 25 K with a deposition rate of 0.037 nm.s-1 - Thickness = 284 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