Fig. A.2
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Examples of raw photodesorption spectra from the studied ices. Top panel: X-ray photodesorption QMS signal of m/z 41 from pure CH3CN ice irradiated at 15 K by scanning the incident photon energy between 395 eV and 420 eV. Bottom panel: X-ray photodesorption QMS signal of m/z 28 from mixed H2O:CH3CN (1:1) ice irradiated at 15 K by scanning the incident photon energy between 530 eV and 560 eV. The start and the end of the irradiation are shown by the red arrows.
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