CERN Accelerating science

CERN Document Server Znaleziono 143 rekordów  1 - 10następnykoniec  skocz do rekordu: Szukanie trwało 0.54 sekund. 
1.
Measurement of the neutron capture and fission reactions of plutonium-241 at the n_TOF experimental area 1 (EAR1) / Dupont, Emmeric (CEA Irfu, Université Paris-Saclay, Gif-sur-Yvette, France) ; Heyse, Jan (European Commission, Joint Research Centre (JRC), Geel, Belgium) ; Bacak, Michael (European Organization for Nuclear Research (CERN), Switzerland) ; Bélier, Gilbert (CEA DAM, Service de Physique Nucléaire, Bruyères le Châtel, France) ; Bernard, David (CEA DES, Service de Physique des Réacteurs et du Cycle, Cadarache, France) ; Berthoumieux, Eric (CEA Irfu, Université Paris-Saclay, Gif-sur-Yvette, France) ; Cahuzac, Aline (CEA Irfu, Université Paris-Saclay, Gif-sur-Yvette, France) ; Diakaki, Maria (NTUA, National Technical University of Athens, Greece) ; Gunsing, Frank (CEA Irfu, Université Paris-Saclay, Gif-sur-Yvette, France) ; Karpinska, Jolanta (European Commission, Joint Research Centre (JRC), Geel, Belgium) et al.
CERN-INTC-2023-066 ; INTC-P-677.
- 2023.
Fulltext
2.
Neutron-induced fission cross sections of Th232 and U233 up to 1 GeV using parallel plate avalanche counters at the CERN n_TOF facility / n_TOF Collaboration
The neutron-induced fission cross sections of Th232 and U233 were measured relative to U235 in a wide neutron energy range up to 1 GeV (and from fission threshold in the case of Th232, and from 0.7 eV in case of U233), using the white-spectrum neutron source at the CERN Neutron Time-of-Flight (n_TOF) facility. Parallel plate avalanche counters (PPACs) were used, installed at the Experimental Area 1 (EAR1), which is located at 185 m from the neutron spallation target. [...]
2023 - 21 p. - Published in : Phys. Rev. C 107 (2023) 044616 Fulltext: PDF;
3.
7 Be(n,p)7 Li Cross Section Measurement for the Cosmological Lithium Problem at the n _ TOF Facility at CERN / n_TOF Collaboration
One of the most puzzling problems in Nuclear Astrophysics is the “Cosmological Lithium Problem”, i.e the discrepancy between the primordial abundance of7 Li observed in metal poor halo stars (Asplund et al. in Astrophys J 644:229–259, 2006, [1]), and the one predicted by Big Bang Nucleosynthesis (BBN). [...]
2019 - 8 p. - Published in : Springer Proc. Phys. 219 (2019) 25-32
In : Nuclei in the Cosmos XV (NIC XV), Assergi, Italy, 24 - 29 Jun 2018, pp.25-32
4.
92Zr(n,γ) and (n,tot) measurements at the GELINA and n_TOF facilities / n_TOF Collaboration
Background: Stellar nucleosynthesis of elements heavier than iron is driven by neutron capture processes. 92Zr is positioned at a strategic point along the slow nucleosynthesis path, given its proximity to the neutron magic number N = 50 and its position at the matching region between the weak and main slow processes. Purpose: In parallel with recent improved astronomical data, the extraction of accurate Maxwellian averaged cross sections (MACSs) derived from a more complete and accurate set of resonance parameters should allow for a better understanding of the stellar conditions at which nucleosynthesis takes place. Methods: Transmission and capture cross section measurements using enriched 92Zr metallic samples were performed at the time-of flight facilities GELINA of JRC-Geel (BE) and n_TOF of CERN (CH). [...]
2022 - 14 p. - Published in : Phys. Rev. C 105 (2022) 025805 Fulltext: PDF;
5.
Measurement of the α ratio and (n,γ) cross section of 235U from 0.2 to 200 eV at n_TOF / n_TOF Collaboration
We measured the neutron capture-to-fission cross-section ratio (α ratio) and the capture cross section of U235 between 0.2 and 200 eV at the n_TOF facility at CERN. The simultaneous measurement of neutron-induced capture and fission rates was performed by means of the n_TOF BaF2 Total Absorption Calorimeter (TAC), used for detection of γ rays, in combination with a set of micromegas detectors used as fission tagging detectors. [...]
2020 - 18 p. - Published in : Phys. Rev. C 102 (2020) 044615 Fulltext: PDF;
6.
Measurement of the α-ratio and (n,γ) cross section of 239Pu at n_TOF / Alcayne, Victor (CIEMAT) ; Alvarez, Francisco (CIEMAT) ; Andrzejewski, Jozef (University of Lodz) ; Balibrea, Javier (IFIC) ; Caamano, Manuel (University of Santiago de Compostela) ; Calvino, Francisco (Polytechnic University of Catalonia) ; Cano-Ott, Daniel (CIEMAT) ; Domingo, Cesar (IFIC) ; Duran, Ignacio (University of Santiago de Compostela) ; Gawlik, A (University of Lodz) et al.
CERN-INTC-2020-049 ; INTC-P-567.
- 2020.
Fulltext
7.
Investigation of the 240Pu(n,f) reaction at the n_TOF/EAR2 facility in the 9 meV–6 MeV range / n_TOF Collaboration
Background: Nuclear waste management is considered amongst the major challenges in the field of nuclear energy. A possible means of addressing this issue is waste transmutation in advanced nuclear systems, whose operation requires a fast neutron spectrum. [...]
2020 - 23 p. - Published in : Phys. Rev. C 102 (2020) 014616 Fulltext from publisher: PDF;
8.
Self Powered Neutron Detectors with High Energy Sensitivity / Fiore, S (ENEA, Frascati) ; Aberle, O (CERN) ; Angelone, M (ENEA, Frascati) ; Calviani, M (CERN) ; Giambattista, F Di (ENEA, Frascati ; Rome U., Tor Vergata) ; Lepore, L (ENEA, Frascati) ; Nyman, M (Geel, JRC) ; Pillon, M (ENEA, Frascati) ; Plompen, A (Geel, JRC)
2020 - 5 p. - Published in : EPJ Web Conf. 225 (2020) 02001
In : 6th International Conference on Advancements in Nuclear Instrumentation Measurement Methods and their Applications, Protoroz, Slovenia, 17 - 21 Jun 2019, pp.02001
9.
Measurement and analysis of the 241Am neutron capture cross section at the n_TOF facility at CERN / Mendoza, E (Madrid, CIEMAT) ; Cano-Ott, D (Madrid, CIEMAT) ; Altstadt, S (Goethe U., Frankfurt (main)) ; Andriamonje, S (IRFU, Saclay) ; Andrzejewski, J (Lodz U.) ; Audouin, L (Orsay, IPN) ; Balibrea, J (Madrid, CIEMAT) ; Bécares, V (Madrid, CIEMAT) ; Barbagallo, M (INFN, Bari) ; Bečvář, F (Charles U.) et al. /n_TOF
The Am241(n,γ) cross section has been measured at the n_TOF facility at CERN with the n_TOF BaF2 Total Absorption Calorimeter in the energy range between 0.2 eV and 10 keV. Our results are analyzed as resolved resonances up to 700 eV, allowing a more detailed description of the cross section than in the current evaluations, which contain resolved resonances only up to 150–160 eV. [...]
2018 - 21 p. - Published in : Phys. Rev. C 97 (2018) 054616
10.
Measurement and resonance analysis of the 33S(n,α)30Si cross section at the CERN n_TOF facility in the energy region from 10 to 300 keV / Praena, J (CAFPE, Granada) ; Sabaté-Gilarte, M (Seville U. ; CERN) ; Porras, I (CAFPE, Granada) ; Quesada, J M (Seville U.) ; Altstadt, S (Frankfurt U.) ; Andrzejewski, J (Lodz U.) ; Audouin, L (Orsay, IPN) ; Bécares, V (Madrid, CIEMAT) ; Barbagallo, M (INFN, Bari) ; Bečvář, F (Charles U.) et al. /n_TOF
The S33(n,α)Si30 cross section has been measured at the neutron time-of-flight (n_TOF) facility at CERN in the neutron energy range from 10 to 300 keV relative to the B10(n,α)Li7 cross-section standard. Both reactions were measured simultaneously with a set of micromegas detectors. [...]
2018 - 10 p. - Published in : Phys. Rev. C 97 (2018) 064603

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