| Thème(s) : |
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Physique/Physique Nucléaire Expérimentale
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| Titre : |
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Simultaneous measurement of neutron-induced capture and fission reactions at CERN |
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| Auteur : |
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C. Guerrero, E. Berthoumieux1, L. Audouin2, F. Gunsing1, L. Tassan-Got2 |
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| Laboratoire : |
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| Résumé : |
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The measurement of the capture cross-section of fissile elements, of utmost importance for the design of innovative nuclear reactors and the management of nuclear waste, faces particular difficulties related to the γ-ray background generated in the competing fission reactions. At the CERN neutron time-of-flight facility n TOF we have combined the Total Absorption Calorimeter (TAC) capture detector with a set of three 235U loaded MicroMegas (MGAS) fission detectors for measuring simultaneously two reactions: capture and fission. The results presented here include the determination of the three detection efficiencies involved in the process: εTAC(n, f), εTAC(n, γ) and εMGAS(n, f). In the test measurement we have succeeded in measuring simultaneously with a high total efficiency the 235U capture and fission cross-sections, disentangling accurately the two types of reactions. The work presented here proves that accurate capture cross-section measurements of fissile isotopes are feasible at n TOF. |
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| Collaboration/Projet : |
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TOF |
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| Type de publication : |
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Articles dans des revues avec comité de lecture |
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Date de publication
ou d'écriture : |
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2012 |
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| Nom du périodique : |
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| European Physical Journal A: Hadrons and Nuclei (Eur. Phys. J. A) |
| Publisher |
EDP Sciences: EPJ |
| ISSN |
1434-6001 (eISSN : 1434-601X) |
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| Volume : |
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48 |
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| Page/Article : |
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29 |
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