Measurement of the Anisotropy of the Angular Distributions of Fragments and the Cross Section for the Neutron-Induced Fission of 242Pu Nuclei in the Energy Range of 0.3–500 MeV

Abstract

The angular distributions of fragments and the cross section for the neutron-induced fission of ²⁴²Pu nuclei in the energy range of 0.3–500 MeV have been measured using the time-of-flight spectrometer of the GNEIS neutron complex at the Petersburg Nuclear Physics Institute, National Research Center Kurchatov Institute. Fission fragments have been detected using low-pressure position-sensitive multiwire proportional counters. The ²⁴²Pu\((n,f)\) fission cross section has been measured with respect to the ²³⁵U\((n,f)\) fission cross section. The data obtained are compared to the results of previous experiments, as well as to estimates from various evaluated data libraries.