Fig. 5

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Thermal programmed desorption of an irradiated H2S ice sample. A given m∕z value can correspond to the molecular ion of a species or to a fragment of a larger species. The desorption temperatures of Sx molecules are indicated by the solid vertical lines. Dashed lines indicate the desorption of H2Sx
species. Apart from the molecular ion of each species, the
values of the main fragments used to confirm the presence of these species are displayed.
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