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Accurate measurement of the standard 235 U(n,f) cross section from thermal to 170 keV neutron energy

An accurate measurement of the 235 U(n,f) cross section from thermal to 170 keV of neutron energy has recently been performed at n_TOF facility at CERN using 6 Li(n,t) 4 He and 10 B(n, α ) 7 Li as references. This measurement has been carried out in order to investigate a possible overestimation of...

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Published in:EPJ Web of conferences 2020, Vol.239, p.8002
Main Authors: Amaducci, S., Aberle, O., Andrzejewski, J., Audouin, L., Bacak, M., Barbagallo, M., Berthoumieux, E., Billowes, J., Bosnar, D., Brown, A., Caamaño, M., Calviño, F., Calviani, M., Cano-Ott, D, Cardella, R., Cerutti, F., Chiaveri, E., Cortés, G., Cosentino, L., Diakaki, M., Domingo-Pardo, C, Dupont, E., Durán, I., Fernández-Domínguez, B., Ferrari, A., Ferreira, P., Finocchiaro, P., Furman, V., Göbel, K., García, A. R., Gilardoni, S., Glodariu, T., Gonçalves, I. F., González-Romero, E., Griesmayer, E., Guerrero, C., Harada, H., Heinitz, S., Heyse, J., Jenkins, D. G., Jericha, E., Käppeler, F., Kadi, Y., Kalamara, A., Kavrigin, P., Kimura, A., Kivel, N., Kokkoris, M., Krtička, M., Leal-Cidoncha, E, Lederer, C., Lerendegui-Marco, J, Macina, D., Manna, A., Martínez, T., Masi, A., Massimi, C., Mastinu, P., Mastromarco, M., Maugeri, E. A., Mendoza, E., Mengoni, A., Milazzo, P. M., Mingrone, F., Musumarra, A., Nolte, R., Oprea, A., Patronis, N., Pavlik, A., Perkowski, J., Porras, I., Praena, J., Quesada, J. M., Radeck, D., Rauscher, T., Rubbia, C., Ryan, J. A., Sabaté-Gilarte, M., Saxena, A., Schillebeeckx, P., Schumann, D., Sedyshev, P., Smith, A. G., Sosnin, N. V., Stamatopoulos, A., Tagliente, G., Tain, J. L., Tarifeño-Saldivia, A., Tassan-Got, L, Vannini, G., Variale, V., Vaz, P., Ventura, A., Vlachoudis, V., Vlastou, R., Wallner, A., Weiss, C., Woods, P. J., Wright, T., Žugec, P.
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Language:English
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Summary:An accurate measurement of the 235 U(n,f) cross section from thermal to 170 keV of neutron energy has recently been performed at n_TOF facility at CERN using 6 Li(n,t) 4 He and 10 B(n, α ) 7 Li as references. This measurement has been carried out in order to investigate a possible overestimation of the 235 U 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 235 U(n,f) cross section in the keV region.
ISSN:2100-014X
2100-014X
DOI:10.1051/epjconf/202023908002