Photolysis-induced scrambling of PAHs as a mechanism for deuterium storage Sandra D. Wiersma, Alessandra Candian, Joost M. Bakker, Jonathan Martens, Giel Berden, Jos Oomens, Wybren Jan Buma and Annemieke Petrignani A&A, 635 (2020) A9 Published online: 28 February 2020 DOI: 10.1051/0004-6361/201936982