Joint research activities at the 3 MV Tandetron™ from IFIN-HH G. Velişa, R. F. Andrei, I. Burducea, A. Enciu, D. Iancu, D. A. Mirea, A. Spiridon and M. Straticiuc Eur. Phys. J. Plus, 136 11 (2021) 1171 Published online: 22 November 2021 DOI: 10.1140/epjp/s13360-021-02156-7