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Table 1

New experiments performed in this work.

Mixture Thickness Ion and energy Stopping powera Max dose
(μm) (eV cm2/16u) (eV/16u)

H2O:CO = 8:1 0.8 H+, 200 keV 2.72 × 10-14 50
CO:CH4:N2 = 1:1:1 1.0 H+, 200 keV 2.60 × 10-14 105
H2O:CH4:NH3 = 1:1:1 1.0 H+, 200 keV 3.76 × 10-14 600

Notes.

(a)

The average stopping power through the sample was obtained using Srim software (Ziegler et al. 2008).

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