[2E11-15] Nuclear Data for Transmutation

[2E15] Study on accuracy improvement of fast-neutron capture reaction data of long-lived MA for development of nuclear transmutation systems

(5)Development of MA nuclear data evaluation method

*Nobuyuki Iwamoto¹, Osamu Iwamoto¹, Gerard Rovira¹, Shoji Nakamura¹, Atsushi Kimura¹, Tatsuya Katabuchi² (1. JAEA, 2. Tokyo Tech)

Keywords:Nuclear transmutation, Neutron capture cross section, Covariance, Gamma-ray strength function, Gamma-ray spectrum, Pulse height spectrum, Minor actinide

Evaluation of gamma-ray strength function was made based on pulse height spectra measured with NaI(Tl) detector of ANNRI in MLF at J-PARC, in order to improve the accuracy of capture cross section of long-lived minor actinides in fast neutron energy region. We will report evaluation results of neutron capture cross section and covariance with the evaluated gamma-ray strength function.