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Fig. 10
Evolving abundances for O2 ice, H2O2 ice and O3 ice for three different activation energies for the reaction iO + iO2. Panel a is for T = 20 K. Panel b is for T = 25 K. The barrier width for quantum tunnelling is bqt = 2 Å, and the molecular diffusion-to-binding energy is 0.5.
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