Fig. 3
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LDPI ReTOF mass spectra obtained after VUV irradiation of 100 ML thick C2H2 ice with varying VUV photon exposures of 7.2 × 1016 photons cm−2 (4 minutes) and 3 × 1017 photons cm−2 (16 minutes) are compared to the unirradiated mass spectra at 15 K. The spectra are offset for clarity. The complete list of detected mass signals is provided in Table 1.
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