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Numrering	Referens	Omslagsbild	Hitta
1.	Diakaki, M., et al. (författare) Towards the high-accuracy determination of the 238U fission cross section at the threshold region at CERN -€“ n_TOF 2016 Ingår i: EPJ Web of Conferences. - : EDP Sciences. - 2100-014X. Konferensbidrag (refereegranskat)abstract The U-238 fission cross section is an international standard beyond 2 MeV where the fission plateau starts. However, due to its importance in fission reactors, this cross-section should be very accurately known also in the threshold region below 2 MeV. The U-238 fission cross section has been measured relative to the U-235 fission cross section at CERN - n_TOF with different detection systems. These datasets have been collected and suitably combined to increase the counting statistics in the threshold region from about 300 keV up to 3 MeV. The results are compared with other experimental data, evaluated libraries, and the IAEA standards.
2.	Leal-Cidoncha, E., et al. (författare) Fission Fragment Angular Distribution measurements of 235U and 238U at CERN n_TOF facility 2016 Ingår i: EPJ Web of Conferences. - : EDP Sciences. - 2100-014X. Konferensbidrag (refereegranskat)abstract Neutron-induced fission cross sections of U-238 and U-235 are used as standards in the fast neutron region up to 200 MeV. A high accuracy of the standards is relevant to experimentally determine other neutron reaction cross sections. Therefore, the detection efficiency should be corrected by using the angular distribution of the fission fragments (FFAD), which are barely known above 20 MeV. In addition, the angular distribution of the fragments produced in the fission of highly excited and deformed nuclei is an important observable to investigate the nuclear fission process. In order to measure the FFAD of neutron-induced reactions, a fission detection setup based on parallel-plate avalanche counters (PPACs) has been developed and successfully used at the CERN-n_TOF facility. In this work, we present the preliminary results on the analysis of new U-235(n,f) and U-238(n,f) data in the extended energy range up to 200 MeV compared to the existing experimental data.

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Typ av publikation: konferensbidrag (2)

Typ av innehåll: refereegranskat (2)

Författare/redaktör: Cerutti, F. (2); Ferrari, A. (2); Kroll, J. (2); Ventura, A. (2); Griesmayer, E. (2); Wright, T. (2); visa fler...; Mastromarco, M. (2); Schmidt, S. (2); Andrzejewski, J (2); Cano-Ott, D (2); Chiaveri, E (2); Colonna, N (2); Domingo-Pardo, C (2); Duran, I (2); Gunsing, F (2); Jericha, E (2); Kadi, Y (2); Leeb, H (2); Marganiec, J (2); Mengoni, A (2); Milazzo, P M (2); Paradela, C (2); Pavlik, A (2); Plompen, A (2); Rauscher, T (2); Reifarth, R (2); Rubbia, C (2); Tagliente, G (2); Tain, J L (2); Tassan-Got, L (2); Vannini, G (2); Vaz, P (2); Vlachoudis, V (2); Boccone, V. (2); Eleftheriadis, C. (2); Calviani, M. (2); Weigand, M. (2); Langer, C. (2); Tarrío, Diego (2); Mendoza, E. (2); Berthoumieux, E. (2); Bosnar, D. (2); Diakaki, M. (2); Dressler, R. (2); Guerrero, C. (2); Jenkins, D. G. (2); Kokkoris, M. (2); Massimi, C. (2); Perkowski, J. (2); Praena, J. (2); visa färre...

Lärosäte: Uppsala universitet (2)

Språk: Engelska (2)

Forskningsämne (UKÄ/SCB): Naturvetenskap (2)

År: 2016 (2)Ta bort avgränsningen

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