Fission program at n_TOF

Tassan‐Got, L.; Colonna, N.; Diakaki, Μ.; Eleme, Z.; Manna, A.; Sekhar, A.; Stamatopoulos, A.; Aberle, O.; Alcayne, V.; Amaducci, S.; Andrzejewski, J.; Audouin, L.; Babiano-Suárez, V.; Bacak, M.; Barbagallo, M.; Bennett, S.; Berthoumieux, E.; Bosnar, D.; Brown, A.; Busso, M.; Caamaño, M.; Caballero, L.; Calviani, M.; Calviño, F.; Cano‐Ott, D.; Casanovas, A.; Cerutti, F.; Chiaveri, E.; Cortés, G.; Cortés‐Giraldo, M. A.; Cosentino, L.; Cristallo, S.; Damone, L. A.; Davies, P. J.; Dietz, M.; Domingo‐Pardo, C.; Dressler, R.; Ducasse, Q.; Dupont, E.; Durán, I.; Fernández-Domíngez, B.; Ferrari, A.; Ferro-Gonçalves, I.; Finocchiaro, P.; Furman, V.; Garg, R.; Gawlik, A.; Gilardoni, S.; Göbel, K.; González‐Romero, E.; Guerrero, C.; Gunsing, F.; Heinitz, S.; Heyse, J.; Jenkins, D. G.; Jiri, U.; Junghans, A. R.; Kadi, Y.; Käppeler, F.; Kimura, A.; Knapová, I.; Kokkoris, M.; Kopatch, Yury; Krticˇka, M.; Kurtulgil, D.; Ladarescu, I.; Lederer-Woods, C.; Lerendegui-Marco, J.; Lonsdale, S. J.; Macina, D.; Martínez, T.; Masi, A.; Massimi, C.; Mastinu, P.; Mastromarco, M.; Maugeri, E. A.; Mazzone, A.; Mendoza, E.; Mengoni, A.; Michalopoulou, V.; Milazzo, Paolo; Millán-Callado, M. A.; Mingrone, F.; Moreno-Soto, J.; Musumarra, A.; Negret, A.; Ogállar, F.; Oprea, A.; Patronis, N.; Pavlik, A.; Perkowski, J.; Petrone, C.; Piersanti, L.; Pirovano, E.; Porras, I.; Praena, J.; Quesada, J. M.; Ramos, D.; Reifarth, R.; Rochman, D.; Rubbia, C.; Sabaté-Gilarte, M.; Saxena, A.; Schillebeeckx, P.; Schumann, D.; Smith, Andrew; Sosnin, N. V.; Sprung, P.; Tagliente, G.; Taín, J. L.; Tarifeño-Saldivia, A.; Thomas, B.; Torres-Sánchez, P.; Tsinganis, A.; Urlaß, S.; Valenta, S.; Vannini, G.; Variale, V.; Vaz, P.; Ventura, A.; Vescovi, D.; Vlachoudis, V.; Vlastou, R.; Wallner, A.; Woods, P. J.; Wright, T.; Žugec, P.

doi:10.1051/epjconf/201921103006

Cited by 1 publication

(9 citation statements)

References 12 publications

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“…Up to the time of the present review, the (n,f) cross section measurements performed at n_TOF in the incident energy region up to 1 GeV are determined relative to the reference fission cross section of 235 U and/or 238 U. Absolute cross Cross section (mb) Kotov 209 Bi, was the normalisation to the U fission cross sections of the JENDL/HE-2007 library [71], evaluated up to 3 GeV. However, a later systematic study [72] of (n,f) and (p,f) reactions up to 1 GeV, using version 5.1.14 of INCL/GEMINI and INCL/ABLA07 codes, showed that the JENDL cross sections were strongly underestimated beyond 500 MeV.…”

Section: Intermediate Energy Fissionmentioning

confidence: 99%

“…In the first n_TOF experimental campaign, the neutroninduced fission cross section of several isotopes was measured with the PPAC setup, namely 232 Th, 233 U, 234 U, 238 U, 237 Np, 209 Bi and nat Pb. More details on these measurements and results are presented in Sect.…”

Section: Parallel Plate Avalanche Counters (Ppac)mentioning

confidence: 99%

“…The areal density of the polyimide foils is measured by visible light spectrophotometry in light transmission mode [180]. In some cases, in particular for 235 U, 238 U, 237 Np, 209 Bi and nat Pb, the characterisation of the samples has also been performed by means of Rutherford back-scattering (RBS), that allows one to assess the content of light elements, as well as of the element of interest when it is stable (as in the case of Pb and Bi).…”

Section: Sample Preparationmentioning

confidence: 99%

“…Finally, neutron-induced fission cross sections were determined at n_TOF for nat Pb and 209 Bi, all the way from ∼50 MeV to 1 GeV [70]. Cross section data on bismuth and lead are of crucial importance for the development and operation of accelerator-driven systems, since lead-bismuth eutectic has been proposed as coolant in ADS, as well as being a target in spallation sources.…”

Section: Cross Section Standardsmentioning

confidence: 99%

“…Cross section data on bismuth and lead are of crucial importance for the development and operation of accelerator-driven systems, since lead-bismuth eutectic has been proposed as coolant in ADS, as well as being a target in spallation sources. Furthermore, the nat Pb(n,f) and 209 Bi(n,f) reactions can conveniently be used as reference for the measurement of other cross sections or for neutron flux determination at high energy. The main advantages in the use of such reactions are the relatively high fission threshold (∼20 MeV), that minimises the background related to low-energy neutrons, and the availability of the material that allows an easy and inexpensive procurement and handling.…”

Section: Cross Section Standardsmentioning

confidence: 99%

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The fission experimental programme at the CERN n_TOF facility: status and perspectives

et al. 2020

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Neutron-induced fission reactions play a crucial role in a variety of fields of fundamental and applied nuclear science. In basic nuclear physics they provide important information on properties of nuclear matter, while in nuclear technology they are at the basis of present and future reactor designs. Finally, there is a renewed interest in fission reactions in nuclear astrophysics due to the multi-messenger observation of neutron star mergers and the important role played by fission recycling in r -process nucleosynthesis. Although studied for several decades, many fundamental questions still remain on fission reactions, while modern applications and the development of more reliable nuclear models require high-accuracy and consistent experimental data on fission cross sections and other fission observables. To address these needs, an extensive fission research proa gramme has been carried out at the n_TOF neutron timeof-flight facility at CERN during the last 18 years, taking advantage of the high energy resolution, high luminosity and wide energy range of the neutron beam, as well as of the detection and data acquisition systems designed for this purpose. While long-lived isotopes are studied on the 185 m long flight-path, the recent construction of a second experimental area at a distance of about 19 m has opened the way to challenging measurements of short-lived actinides. This article provides an overview of the n_TOF experimental programme on neutron-induced fission reactions along with the main characteristics of the facility, the various detection systems and data analysis techniques used. The most important results on several major and minor actinides obtained so far and the future perspectives of fission measurements at n_TOF are presented and discussed.

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Section: Intermediate Energy Fissionmentioning

confidence: 99%

Section: Parallel Plate Avalanche Counters (Ppac)mentioning

confidence: 99%