Optical fiber distributed sensing based on Rayleigh scatter frequency domain reflectometry for Sodium leakage detection within SFR reactorsS. Armiroli, R. Cotillard, G. Laffont, M. Girard, D. Cambet, J.-P. Jeannot, P. Charvet, S. Albaladéjo and S. LussoEPJ Web Conf., 170 (2018) 03001DOI: https://doi.org/10.1051/epjconf/201817003001