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Title First results of the 230Th(n,f) cross section measurements at the CERN n_TOF facility
Author(s) n_TOF Collaboration  Zeige alle 128 Autoren
Publication 2020
Number of pages 6
In: EPJ Web Conf. 239 (2020) 05004
In: International Conference on Nuclear Data for Science and Technology (ND 2019), Beijing, China, 19 - 24 May 2019, pp.05004
DOI 10.1051/epjconf/202023905004
Subject category Nuclear Physics - Experiment
Accelerator/Facility, Experiment CERN PS ; nTOF
Abstract The study of neutron-induced reactions on actinides is of considerable importance for the design of advanced nuclear systems and alternative fuel cycles. Specifically, 230Th is produced from the α-decay of 234U as a byproduct of the 232Th/233U fuel cycle, thus the accurate knowledge of its fission cross section is strongly required. However, few experimental datasets exist in literature with large deviations among them, covering the energy range between 0.2 to 25 MeV. In addition, the study of the 230Th(n,f) cross-section is of great interest in the research on the fission process related to the structure of the fission barriers. Previous measurements have revealed a large resonance at En=715 keV and additional fine structures, but with high discrepancies among the cross-section values of these measurements. This contribution presents preliminary results of the 230Th(n,f) cross-section measurements at the CERN n_TOF facility. The high purity targets of the natural, but very rare isotope 230Th, were produced at JRC-Geel in Belgium. The measurements were performed at both experimental areas (EAR-1 and EAR-2) of the n_TOF facility, covering a very broad energy range from thermal up to at least 100 MeV. The experimental setup was based on Micromegas detectors with the 235U(n,f) and 238U(n,f) reaction cross-sections used as reference.
Copyright/License publication: © The Authors, published by EDP Sciences. T (License: CC-BY-4.0)

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 Datensatz erzeugt am 2021-06-19, letzte Änderung am 2021-06-19


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