Photoprocessing of H2S on dust grains - Building S chains in translucent clouds and comets S. Cazaux, H. Carrascosa, G. M. Muñoz Caro, P. Caselli, A. Fuente, D. Navarro-Almaida and P. Riviére-Marichalar A&A, 657 (2022) A100 Published online: 19 January 2022 DOI: 10.1051/0004-6361/202141861