Science Advances

Supplementary Materials

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  • Supplementary Text
  • Table S1. Infrared absorption features recorded before and after the irradiation of acetylene (C2H2) and D2-acetylene (C2D2) ices at 5 K.
  • Table S2. Ion signal detected during 1+1 REMPI at λ = 258.994 nm.
  • Table S3. Data applied to calculate the irradiation dose per molecule in C2H2 and C2D2 ices.
  • Table S4. Yields of specific isomers detected via REMPI.
  • Fig. S1. Deuterated acetylene ice spectra before (black) and after (red) processing with energetic electrons.
  • Fig. S2. Temporal profile of the FTIR band at 3030 cm−1 during irradiation and TPD.
  • Fig. S3. Temperature-dependent SPI-ReTOF-MS (PI = 10.49 eV) data of the subliming molecules from unirradiated acetylene ice.
  • Fig. S4. REMPI-ReTOF-MS spectra versus temperature for carbon monoxide subliming from the substrate used as a calibration compound to confirm the REMPI capabilities of the system.
  • Fig. S5. Dominant ion signals detected during 1+1 REMPI at λ = 258.994 nm.
  • Fig. S6. Weak ion signals detected during 1+1 REMPI at λ = 258.994 nm.
  • References (6697)

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