Author(s): J. Byggmästar, V-M. Yli-Suutala, A. Fellman, J. Åström, J. Westerholm, and F. Granberg We observe for the first time in silico the transition to a linear regime in the primary damage production in tungsten. As the critical plasma-facing material in fusion reactors, radiation damage in tungsten has been studied extensively in experiments and simulations. Irradiation experiments routine… [Phys. Rev. Lett. 137, 046101] Published Tue Jul 21, 2026