Fig. 3: PI-ReTOF mass spectra.

Measured as a function of temperature during the temperature program desorption phase of irradiated methylamine (CH₃NH₂)-oxygen (O₂) ice mixtures at photon energies of (a) 9.50 and (b) 9.10 eV. The dark purple colored lines indicate ion counts. Source data are provided as a Source Data file.