High precision analysis of isotopic composition for samples used for nuclear cross-section measurementsYuji Shibahara, Jun-ichi Hori, Koichi Takamiya, Toshiyuki Fujii, Satoshi Fukutani, Tadafumi Sano and Hideo HaradaEPJ Web Conf., 146 (2017) 03028DOI: https://doi.org/10.1051/epjconf/201714603028