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Fig. 2


IR transmittance spectra in optical-depth scale (P polarization) of CH3OH:N2 ice (about 250 nm thick) deposited at 16 K as deposited; after bombardment with 3.91 × 1014 200 keV H+ cm-2 (dose = 10 eV/16u); after photolysis with 2.42 × 1018 photons cm-2 (dose = 41 eV/16u); after simultaneous processing with 1.29 × 1014 200 keV H+ cm-2 and 1.76 × 1018 photons cm-2 (total dose = 37 eV/16u).

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