Measurement of the neutron capture cross section of the fissile isotope $^{235}$U with the CERN n_TOF Total Absorption Calorimeter and a fission tagging based on micromegas detectors

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Actual and future nuclear technologies require more accurate nuclear data on the (n, $\gamma$) cross sections and $\alpha$-ratios of fissile isotopes. Their measurement presents several difficulties, mainly related to the strong fission $\gamma$-ray background competing with the weaker $\gamma$-ray...

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Detalles Bibliográficos
Autores principales: Mendoza, E, Balibrea, J, Cano-Ott, D, Guerrero, C, Berthoumieux, E, Altstadt, S, Andrzejewski, J, Audouin, L, Barbagallo, M, Bécares, V, Becvár, F, Belloni, F, Billowes, J, Boccone, V, Bosnar, D, Brugger, M, Calviani, M, Calviño, F, Carrapiço, C, Cerutti, F, Chiaveri, E, Chin, M, Colonna, N, Cortés, G, Cortés-Giraldo, M A, Diakaki, M, Domingo-Pardo, C, Duran, I, Dressler, R, Dzysiuk, N, Eleftheriadis, C, Ferrari, A, Fraval, K, Ganesan, S, García, A R, Giubrone, G, Gómez-Hornillos, M B, Gonçalves, I F, González-Romero, E, Griesmayer, E, Gunsing, F, Gurusamy, P, Jenkins, D G, Jericha, E, Kadi, Y, Käppeler, F, Karadimos, D, Kawano, T, Kivel, N, Koehler, P, Kokkoris, M, Korschinek, G, Krticka, M, Kroll, J, Langer, C, Lampoudis, C, Leal-Cidoncha, E, Lederer, C, Leeb, H, Leong, L S, Losito, R, Manousos, A, Marganiec, J, Martínez, T, Mastinu, P F, Mastromarco, M, Massimi, C, Meaze, M, Mengoni, A, Milazzo, P M, Mingrone, F, Mirea, M, Mondelaers, W, Paradela, C, Pavlik, A, Perkowski, J, Pignatari, M, Plompen, A, Praena, J, Quesada, J M, Rauscher, T, Reifarth, R, Riego, A, Roman, F, Rubbia, C, Sarmento, R, Schillebeeckx, P, Schmidt, S, Schumann, D, Stetcu, I, Sabaté, M, Tagliente, G, Tain, J L, Tarrío, D, Tassan-Got, L, Tsinganis, A, Valenta, S, Vannini, G, Variale, V, Vaz, P, Ventura, A, Versaci, R, Vermeulen, M J, Vlachoudis, V, Vlastou, R, Wallner, A, Ware, T, Weigand, M, Weiss, C, Wright, T, Zugec, P
Lenguaje:eng
Publicado: 2014
Materias:
Nuclear Physics - Experiment
Acceso en línea:http://cds.cern.ch/record/1975461
Descripción
Sumario:Actual and future nuclear technologies require more accurate nuclear data on the (n, $\gamma$) cross sections and $\alpha$-ratios of fissile isotopes. Their measurement presents several difficulties, mainly related to the strong fission $\gamma$-ray background competing with the weaker $\gamma$-ray cascades used as the experimental signature of the (n, $\gamma$) process. A specific setup has been used at the CERN n_TOF facility in 2012 for the measurement of the (n,$\gamma$ ) cross section and $\alpha$- ratios of fissile isotopes and used for the case of the $^{235}$U isotope. The setup consists in a set of micromegas fission detectors surrounding $^{235}$U samples and placed inside the segmented BaF$_2$ Total Absorption Calorimeter.

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