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Table 3

Laboratory spectra used to fit observations.

Sample Reference

H2O:CO = 8:1 +200 keV H+, T = 17 K 1
CO:CH4:N2 = 1:1:1 +200 keV H+, T = 17 K 1
H2O:CH4:NH3 = 1:1:1 +200 keV H+, T = 17 K 1
H2O on carbon grains +200 keV H+, T = 17 K 2
CO +200 keV H+, T = 16 K 3
CO +200 keV H+, T = 40 K 3
CO:H2O = 10:1 +200 keV H+, T = 16 K 3
CO:H2O = 10:1 +200 keV H+, T = 40 K 3
CO:N2 = 8:1 +200 keV H+, T = 16 K 3
CO:N2 = 8:1 +200 keV H+, T = 40 K 3
CO:N2 = 1:1 +200 keV H+, T = 16 K 3
CO:N2 = 1:1 +200 keV H+, T = 40 K 3
CH3OH +200 keV H+, T = 16 K 4
CH3OH +200 keV H+, T = 40 K 4

Reference. (1) This work; (2) Ioppolo et al. (2013b); (3) Ioppolo et al. (2009); (4) Modica & Palumbo (2010).

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