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PI-ReTOF-MS data at m/z = 48 during the TPD phase of processed methanol (CH3OH) and oxygen (O2) ice mixtures. (A) PE = 10.86 eV; the inset shows the expanded view between 160 K and 200 K; (B) PE = 10.49 eV; (C) PE = 10.25 eV; (D) PE = 9.50 eV; and (E) PE = 10.86 eV, no electron irradiation.
