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Fig. 8
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Evolution of the HDCS/H2CS (left) and D2CS ratio (right) as a function of time and temperature for an initial sulphur fractional abundance S+ = 1.5 × 10−7, a hydrogen number density nH = 106 cm−3, and a CR ionisation rate ζ = 1 × 10−16 (bottom row) and 1.3 × 10−17 s−1 (top row).
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