[2E20-22] Nuclear fission reaction 3

[2E22] Systematic study on fission yields, fission product nuclear data and fission mechnaisms

(11)Analysis of antineutrino energy spectra from aggregate FP decay based on the gross theory

*Tadashi Yoshida¹, Takahiro Tachibana², Satoshi Chiba¹ (1. Tokyo Tech, 2. Waseda Univ.)

Keywords:beta decay, reactor neutrino, gross theory, allowd transition, first-forbidden transition

Summation calculation of the antineutrino energy-spectra from aggregate decay of a thousand of fisson products was carried out fully based on the 2nd-generation gross theory, where attention being paid on the special role of odd-odd FPs. The results reproduce the experimantal data well bering comparison with the current elaborative summation calculation based on huge amount of the experimental data of individual FPs. This success can lead to the improvement of the teory as well as the fission-yield data.