Sensitivity of delayed neutron to fission yields and beta-decay half-lives

Minato, Futoshi   

Delayed neutron yields of U-235, -238 and Pu-239 were estimated by aggregate calculation with the JENDL FP Decay Data File 2011 and JENDL FP Fission Yields Data File 2011. The sensitivity of delayed neutron to the fission yields and beta-decay half-lives were also investigated. It is found that delayed neutron of U-235 is sensitive to accuracies of fission yields and half-lives of several nuclei. In addition, there are nuclei which play an important role with respect to either fission yields or half-lives. This result gives a list of prior precursors to be measured to experimental groups and will be useful for making next fission yields data file and FP decay data file.