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Neutron induced fission / " 'Th / "3,235.236, / 249cf / Delayed neutron precursors / Cumulative yield AbstractThe cumulative yields of 8 delayed neutron precursors were determined in the fission of "®Th, 236,238u^ 237Np^ 240.24i.242py^ 2'^9cf induced by neutrons of various energies. The measurements were performed using a cyclic Irradiation regime. For the decomposition of the complex neutron decay curve an incremental deconvoiution method was used. 105 of 128 cumulative yields were measured for the first time. The data obtained are compared to calculated and measured values from the literature.