[2A16-21] Uncertainty Quantification, Fission Product Yield and Decay Data

[2A20] Calculations on Fission Product Yields and Fission Observables by Nuclear-Reaction Code TALYS

(2)From Independent Fission Product Yields to Beta-Decay Observables

*Shin Okumura¹, Kazuki Fujio², Arjan Koning¹, Satoshi Chiba² (1. IAEA, 2. Tokyo Tech)

Keywords:Fission Product Yield, Beta decay

TALYS is a nuclear-reaction program that simulates nuclear reactions with the Hauser-Feshbach statistical decay theory. We applied the Hauser-Feshbach statistical decay to the de-excitations of fission fragments. The characteristics of fission fragments, Y(Z, A, E_ex, J^π) that are used as inputs of TALYS calculations, were imported from several models.
In our series of presentations, (1) we describe the definition of fission fragment distributions, Y(Z, A, E_ex, J^π), and the method that TALYS calculates the de-excitation of fission fragments. The simultaneously calculated independent fission product yields and other fission observables up to 5 MeV incident neutrons were compared with experimental and evaluated data. In presentation (2), we show the calculated results of the beta-decay observables by the beta-decay code that we developed.