[3E11-16] Nuclear Data Measurement

[3E13] Measurement and Resonance Analysis of the Neutron Capture Cross Section of Np-237

*Gerard Rovira Leveroni¹, Tatsuya Katabuchi¹, Shota Matsuura¹, Ken-ichi Tosaka¹, Osamu Iwamoto², Atsushi Kimura², Shoji Nakamura², Nobuyuki Iwamoto², Kazushi Terada¹ (1. Tokyo Institute of Technology, 2. Japan Atomic Energy Agency)

Keywords:J-PARC, ANNRI, Neutron capture cross section, Minor Actinides, Time-of-flight measurement, Resonance Analysis, REFIT, Nuclear Transmutation

The neutron capture cross section of Np-237 was measured using neutrons with energy ranging from thermal energy to 500 keV. A Time of Flight (TOF) method using a NaI(Tl) detector was employed for this measurement and the data were analyzed based on a pulse-height weighting technique in order to derive the neutron capture cross section. Along with the cross section measurement, the results of a resonance analysis using the REFIT program are presented.