Measurement of the neutron-induced fission cross section of Th at the CERN n_TOF facility

Michalopoulou, V.*; 原田 秀郎; 木村 敦; 他134名*

Physical Review C, 108(1), p.014616_1 - 014616_15, 2023/07

https://doi.org/10.1103/PhysRevC.108.014616

The neutron-induced fission cross section of Th has been measured at the neutron time-of-flight facility n_TOF located at CERN. The experiment was performed at the experimental area EAR-1 with a neutron flight path of 185 m, using Micromegas detectors for the detection of the fission fragments. The Th(n,f) cross section was determined relative to the U(n, f) one, covering the energy range from the fission threshold up to 400 MeV. The results from the present work are compared with existing cross-section datasets and the observed discrepancies are discussed and analyzed.