Abstract
An accurate measurement of the U-235(n,f) cross section from thermal to 170 keV of neutron energy has recently been performed at n_TOF facility at CERN using Li-6(n,t)He-4 and B-10(n,alpha)Li-7 as references. This measurement has been carried out in order to investigate a possible overestimation of the U-235 fission cross section evaluation provided by most recent libraries between 10 and 30 keV. A custom experimental apparatus based on in-beam silicon detectors has been used, and a Monte Carlo simulation in GEANT4 has been employed to characterize the setup and calculate detectors efficiency. The results evidenced the presence of an overestimation in the interval between 9 and 18 keV and the new data may be used to decrease the uncertainty of U-235(n,f) cross section in the keV region.
| Original language | English |
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| Title of host publication | Accurate measurement of the standard 235U(n,f) cross section from thermal to 170 keV neutron energy |
| Place of Publication | China |
| Publisher | EPJ Web of Conferences |
| ISBN (Print) | 978-2-7598-9106-1 |
| DOIs | |
| Publication status | Published - 2020 |
| Event | 2019: International Conference on Nuclear Data for Science and Technology - Beijing, China, China Duration: 1 Jan 2019 → … |
Conference
| Conference | 2019: International Conference on Nuclear Data for Science and Technology |
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| Country/Territory | China |
| Period | 1/01/19 → … |
| Other | May 19-24 |