Status and the need to re-evaluate resonance parameters of U238 for energies above 500 eV

For ²³⁸U a new evaluation in the resonance region was produced by JRC Geel in collaboration with INRNE Sofia, NDS/IAEA and KAERI. The evaluation in the URR is described by Sirakov et al. (Eur. Phys. J. A 53 (2017) 199). In the RRR only parameters in the energy region below 500 eV were revised. This revision is described by Kim et al. (Eur. Phys. J. A 52 (2016) 170). The resonance shape analysis code REFIT was used to determine resonance parameters by adjusting them in a least squares fit to the experimental capture yield obtained at GELINA by Kim et al. and the transmission data of Olsen et al. obtained at ORELA. Up to 1200 eV the capture and transmission data could be parameterised by using one set of resonance parameters, without applying any additional background and normalisation correction