Neutron-induced fission cross section of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mrow /><mml:mn>245</mml:mn></mml:msup></mml:math>Cm: New results from data taken at the time-of-flight facility n<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mo>_</mml:mo></mml:math>TOF

Calviani, M.; Meaze, M.; Colonna, N.; Praena, J.; Abbondanno, U.; Aerts, G.; Álvarez, H.; Álvarez‐Velarde, F.; Andriamonje, S.; Andrzejewski, J.; Assimakopoulos, P.; Audouin, L.; Badurek, G.; Barbagallo, M.; Baumann, P.; Bečvář, F.; Belloni, F.; Berthier, B.; Berthoumieux, E.; Calviño, F.; Cano‐Ott, D.; Capote, R.; Carrapiço, C.; Cennini, P.; Chepel, V.; Chiaveri, E.; Cortés, G.; Couture, A.; Cox, James W.; Dahlfors, M.; David, S.; Dillmann, I.; Domingo‐Pardo, C.; Dridi, W.; Durán, I.; Eleftheriadis, C.; Embid‐Segura, M.; Ferrant, L.; Ferrari, A.; Ferreira‐Marques, R.; Fujii, K.; Furman, W.; Galanopoulos, S.; Giubrone, G.; Gonçalves, I. F.; González‐Romero, E.; Goverdovski, A.; Gramegna, F.; Guerrero, C.; Gunsing, F.; Haas, Brian J.; Haight, R. C.; Heil, M.; Herrera-Martı́nez, A.; Igashira, M.; Jericha, E.; Käppeler, F.; Kadi, Y.; Karadimos, D.; Karamanis, D.; Ketlerov, V.; Kerveno, M.; Koehler, P.; Konovalov, V.; Kossionides, E.; Krtička, M.; Lampoudis, C.; Lederer, C.; Leeb, H.; Lindote, A.; Lopes, I.; Lozano, M.; Lukić, S.; Marganiec, J.; Marrone, S.; Martínez, T.; Massimi, C.; Mastinu, P.; Mendoza, E.; Mengoni, A.; Milazzo, Paolo; Moreau, C.; Mosconi, M.; Neves, F.; Oberhummer, H.; O’Brien, S.; Pancin, J.; Papachristodoulou, C.; Papadopoulos, C.; Paradela, C.; Patronis, N.; Pavlik, A.; Pavlopoulos, P.; Perrot, L.; Pigni, Marco T.; Plag, R.; Plompen, A.; Plukis, A.; Poch, A.; Pretel, C.; Quesada, J. M.; Rauscher, T.; Reifarth, R.; Rosetti, M.; Rubbia, C.; Rudolf, G.; Rullhusen, P.; Salgado, J.; Santos, C.; Sarchiapone, L.; Sarmento, R.; Savvidis, I.; Schillebeeckx, P.; Stéphan, C.; Tagliente, G.; Taín, J. L.; Tassan‐Got, L.; Tavora, L.; Terlizzi, R.; Vannini, G.; Variale, V.; Vaz, P.; Ventura, A.; Villamarı́n, D.; Vincente, M. C.; Vlachoudis, V.; Vlastou, R.; Voß, F.; Walter, S.; Wiescher, M.; Wisshak, K.

doi:10.1103/physrevc.85.034616

Cited by 16 publications

(4 citation statements)

References 22 publications

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“…The FIC detector has been used for fission cross section measurements at n_TOF since the beginning of its operation, providing interesting results for several isotopes, such as 233 U [120,121] [127]. More details on these measurements and results are presented in Sect.…”

Section: The Fast Ionisation Chamber (Fic)mentioning

confidence: 99%

“…53 Ratio of the resonance kernels of the 245 Cm(n,f) cross section measured at n_TOF and those extracted from evaluated data of two major libraries (see Ref. [127]). Below 30 eV evaluations are based on two highly discrepant measurements, while above this energy they are based on a unique dataset, obtained with a neutron beam produced in a nuclear explosion.…”

Section: Fission Cross Sections Of Minor Actinidesmentioning

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: The Fast Ionisation Chamber (Fic)mentioning

confidence: 99%

Section: Fission Cross Sections Of Minor Actinidesmentioning

confidence: 99%

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

et al. 2020

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“…The number of neutrons per a typical proton pulse varies between 5.5 × 10 5 and 1.2 × 10 7 , depending on the collimator/moderator configuration [188]. Recent examples of fission cross-section measurements for the reactions n+ 245 Cm and n+ 237 Np can be found in references [189,190]; the fission fragments were measured with a fast ionization chamber [117]. In some cases, PPACs were used, which allow to measure the FFs angular distribution relative to the neutronbeam direction, in addition to the cross-section measurements.…”

Section: Fission With Neutron Spallation Sources At N − Tof Atmentioning

confidence: 99%

Nuclear fission: a review of experimental advances and phenomenology

2017

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In the last two decades, through technological, experimental and theoretical advances, the situation in experimental fission studies has changed dramatically. With the use of advanced production and detection techniques both much more detailed and precise information can now be obtained for the traditional regions of fission research and, crucially, new regions of nuclei have become routinely accessible for fission studies. This work first of all reviews the recent developments in experimental fission techniques, in particular the resurgence of transfer-induced fission reactions with light and heavy ions, the emerging use of inverse-kinematic approaches, both at Coulomb and relativistic energies, and of fission studies with radioactive beams. The emphasis on the fission-fragment mass and charge distributions will be made in this work, though some of the other fission observables, such as prompt neutron and γ-ray emission will also be reviewed. A particular attention will be given to the low-energy fission in the so far scarcely explored nuclei in the very neutron-deficient lead region. They recently became the focus for several complementary experimental studies, such as β-delayed fission with radioactive beams at ISOLDE(CERN), Coulex-induced fission of relativistic secondary beams at FRS(GSI), and several prompt fusion-fission studies. The synergy of these approaches allows a unique insight in the new region of asymmetric fission around [Formula: see text]Hg, recently discovered at ISOLDE. Recent extensive theoretical efforts in this region will also be outlined. The unprecedented high-quality data for fission fragments, completely identified in Z and A, by means of reactions in inverse kinematics at FRS(GSI) and VAMOS(GANIL) will be also reviewed. These experiments explored an extended range of mercury-to-californium elements, spanning from the neutron-deficient to neutron-rich nuclides, and covering both asymmetric, symmetric and transitional fission regions. Some aspects of heavy-ion induced fusion-fission and quasifission reactions will be also discussed, which reveal their dynamical features, such as the fission time scale. The crucial role of the multi-chance fission, probed by means of multinucleon-transfer induced fission reactions, will be highlighted. The review will conclude with the discussion of the new experimental fission facilities which are presently being brought into operation, along with promising 'next-generation' fission approaches, which might become available within the next decade.

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“…In this domain, the coupled-channels model, the dispersive optical potential, and an heuristic model for resonant transmission are of eminent importance. On the experimental side there have been several publications on refinements of existing [109,110,111,112,113,114] or the development of novel techniques [115,116] as well as on new experimental findings [117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,…”

Section: Introductionmentioning

confidence: 99%

Review on the progress in nuclear fission

Schmidt,

Jurado

2018

Preprint

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Neutron-induced fission cross section of245Cm: New results from data taken at the time-of-flight facility n_TOF

Cited by 16 publications

References 22 publications

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

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

Nuclear fission: a review of experimental advances and phenomenology

Review on the progress in nuclear fission

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