Systematic study for the mass distribution of fission fragments in the neutron rich region M. Ohta, S. Tatsuda, T. Hashizume, K. Yamamoto, T. Wada, K. Sumiyoshi, K. Otsuki, T. Kajino, H. Koura, S. Chiba and T. Tachibana Published online: 17 June 2008 DOI: 10.1051/ndata:07302