Radiation-detection methods to counter radiological threats⋆ Ken’ichi Tsuchiya, Kenji Kurosawa, Norimitsu Akiba, Hidetoshi Kakuda, Daisuke Imoto, Manato Hirabayashi and Kenro Kuroki Eur. Phys. J. Plus, 133 7 (2018) 266 Published online: 20 July 2018 DOI: 10.1140/epjp/i2018-12146-3