Normalization of the ²³⁹Pu Fission Cross Section

Measurements have been performed at the Geel Linear Accelerator from 0.01 eV up to 1000 eV in order to investigate the normalization of ²³⁹Pu fission cross-section measurements. Two different experiments were performed using surface barrier detectors and a double ionization chamber, respectively. In both cases, the ¹⁰B(n,α) reaction was used as a flux monitor. The results indicate that the Weston and Todd data should be renormalized by ∼3%, resulting in a satisfactory agreement with ENDF/B-VI.