β Decay Spectra Measurements for the Study of Reactors’ Antineutrino Spectra G. A. Alcalá, A. Algora, M. Fallot, M. Estienne, V. Guadilla, W. Galletly, A. Beloeuvre, J.-S. Stutzmann, S. Bouvier, T. Eronen et al. (9 more) EPJ Web Conf., 324 (2025) 00023 Published online: 11 April 2025 DOI: 10.1051/epjconf/202532400023