Desorption from bare cold finger. Top panel: Ethanolamine main fragments TPD experimental curves (solid colored lines) and fits (dashed black lines), obtained with a partial pressure of 1.5 mbar; linear scale. Bottom panel: TPD curves for pure ethanolamine (solid lines) and for 1:1 mixture with water (dashed lines); with or without UV irradiation; all obtained at partial pressure of 0.5 mbar.