Surface vs diffusion in TDS of hydrogen Ekaterina L. Alekseeva, Alexander K. Belyaev, Anatoly M. Polyanskiy, Vladimir A. Polyanskiy, Evgeniy A. Varshavchik and Yuri A. Yakovlev E3S Web Conf., 121 (2019) 01012 Published online: 14 October 2019 DOI: 10.1051/e3sconf/201912101012