Sulfur depletion in dense clouds and circumstellar regions - I. H2S ice abundance and UV-photochemical reactions in the H2O-matrix

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Fig. 9

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Integrated absorbance values of the 1233 cm^-1 band attributed to H₂SS ice as a function of UV irradiation time, corresponding to experiment S8, see Table 1. The solid line is a first-order fit using rate constant k = 0.03 min^-1, which is probably the value of k₇ from Eq. (14).

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