CERN Accelerating science

CERN Document Server 2,051 εγγραφές βρέθηκαν  1 - 10επόμενοτέλος  μετάβαση στην εγγραφή: Η έρευνα πήρε 0.72 δευτερόλεπτα. 
1.
Neutron capture and total cross-section measurements on $^{94,95,96}$Mo at n_TOF and GELINA / n_TOF Collaboration
Capture and total cross section measurements for 94,95,96Mo have been performed at the neutron time-of-flight facilities, n_TOF at CERN and GELINA at JRC-Geel. The measurements were performed using isotopically enriched samples with an enrichment above 95% for each of the 94,95,96Mo isotopes. [...]
2023 - 4 p. - Published in : EPJ Web Conf. 284 (2023) 01031 Fulltext: PDF;
In : 15th International Conference on Nuclear Data for Science and Technology, Online, 21 - 29 Jul 2022, pp.01031
2.
High-resolution cross section measurements for neutron interactions on $^{89}$Y with incident neutron energies up to 95 keV / Tagliente, G (INFN, Bari) ; Milazzo, P M (INFN, Trieste) ; Paradela, C (Geel, JRC) ; Kopecky, S (Geel, JRC) ; Vescovi, D (INFN, Perugia ; Cagliari Observ.) ; Alaerts, G (Geel, JRC) ; Damone, L A (INFN, Bari ; CERN) ; Heyse, J (Geel, JRC) ; Krtička, M (Charles U.) ; Schillebeeckx, P (Geel, JRC) et al.
The cross section of the $^{89}$Y(n, $\gamma $) reaction has important implications in nuclear astrophysics and for advanced nuclear technology. Given its neutron magic number N = 50 and a consequent small neutron capture cross section, $^{89}$Y represents one of the key nuclides for the stellar s-process. [...]
2024 - 18 p. - Published in : Eur. Phys. J. A 60 (2024) 21
3.
A segmented total energy detector (sTED) for (n, γ) cross section measurements at n_TOF EAR2 / n_TOF Collaboration
The neutron time-of-flight facility n_TOF is characterised by its high instantaneous neutron intensity, high-resolution and broad neutron energy spectra, specially conceived for neutron-induced reaction cross section measurements. Two Time-Of-Flight (TOF) experimental areas are available at the facility: experimental area 1 (EAR1), located at the end of the 185 m horizontal flight path from the spallation target, and experimental area 2 (EAR2), placed at 20 m from the target in the vertical direction. [...]
2023 - 5 p. - Published in : EPJ Web Conf. 284 (2023) 01043 Fulltext: PDF;
In : 15th International Conference on Nuclear Data for Science and Technology, Online, 21 - 29 Jul 2022, pp.01043
4.
The n_TOF NEAR Station Commissioning and first physics case / n_TOF Collaboration
The NEAR Station is a new experimental area developed at the n_TOF Facility at CERN. The activation station of NEAR underwent a characterization of the beam following the installation of the new n_TOF Spallation Target. [...]
2023 - 7 p. - Published in : EPJ Web Conf. 284 (2023) 06009 Fulltext: PDF;
In : 15th International Conference on Nuclear Data for Science and Technology, Online, 21 - 29 Jul 2022, pp.06009
5.
Multi-section fission ionization chamber for measurement of 239Pu(n,γ) reaction in fission tagging method / Perkowski, J (Lodz U.) ; Alcayne, V (Madrid, CIEMAT) ; Andrzejewski, J (Lodz U.) ; Cano-Ott, D (Madrid, CIEMAT) ; Gawlik-Ramięga, A (Lodz U.) ; Mendoza, E (Madrid, CIEMAT) ; Sánchez-Caballero, A (Madrid, CIEMAT) ; Sibbens, G (Geel, JRC) ; Vanleeuw, D (Geel, JRC) ; Aberle, O (CERN) et al.
The 239Pu(n,γ) reaction cross section is very important for operation of both thermal and fast reactors, when loaded with MOX fuels. According to the NEA/OECD High Priority Request List the precision of cross section data for this reaction should be improved. [...]
2024 - 8 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 1067 (2024) 169649 Fulltext: PDF;
6.
The neutron time-of-flight facility n_TOF at CERN Recent facility upgrades and detector developments / n_TOF Collaboration
Based on an idea by Carlo Rubbia, the n_TOF facility at CERN has been operating for over 20 years. It is a neutron spallation source, driven by the 20 GeV/c proton beam from the CERN PS accelerator. [...]
2023 - 11 p. - Published in : J. Phys. : Conf. Ser. 2586 (2023) 012150 Fulltext: PDF;
In : 28th International Nuclear Physics Conference (INPC 2022), Cape Town, South Africa, 11 - 16 Sep 2022, pp.012150
7.
Measurement of the Ce140(n,γ) Cross Section at n_TOF and Its Astrophysical Implications for the Chemical Evolution of the Universe / n_TOF Collaboration
Ce140(n,γ) is a key reaction for slow neutron-capture (s-process) nucleosynthesis due to being a bottleneck in the reaction flow. For this reason, it was measured with high accuracy (uncertainty ≈5%) at the n_TOF facility, with an unprecedented combination of a high purity sample and low neutron-sensitivity detectors. [...]
2024 - 8 p. - Published in : Phys. Rev. Lett. 132 (2024) 122701
8.
Status report of the n_TOF facility after the 2nd CERN long shutdown period / Patronis, N (Ioannina U. ; CERN) ; Mengoni, A (ENEA, Bologna ; INFN, Bologna) ; Goula, S (Ioannina U.) ; Aberle, O (CERN) ; Alcayne, V (Madrid, CIEMAT) ; Altieri, S (INFN, Pavia ; Brescia U. ; Pavia U.) ; Amaducci, S (INFN, Catania) ; Andrzejewski, J (Lodz U.) ; Babiano-Suarez, V (Valencia U., IFIC) ; Bacak, M (CERN) et al.
During the second long shutdown period of the CERN accelerator complex (LS2, 2019-2021), several upgrade activities took place at the n_TOF facility. The most important have been the replacement of the spallation target with a next generation nitrogen-cooled lead target. [...]
2023 - 10 p. - Published in : EPJ Tech. Instrum. 10 (2023) 13 Fulltext: PDF;
9.
Measurement of the $^{244}Cm$ and $^{246}Cm$ neutron-induced capture cross sections at the n_TOF facility / Alcayne, V (Madrid, CIEMAT) ; Kimura, A (JAERI, Tokai) ; Mendoza, E (Madrid, CIEMAT) ; Cano-Ott, D (Madrid, CIEMAT) ; Martínez, T (Madrid, CIEMAT) ; Aberle, O (CERN) ; Andrzejewski, J (Lodz U.) ; Audouin, L (Orsay, IPN) ; Bécares, V (Madrid, CIEMAT) ; Bacak, M (CERN ; IRFU, Saclay ; Vienna, Tech. U.) et al.
The neutron capture reactions of the $^{244}$Cm and $^{246}$Cm isotopes open the path for the formation of heavier Cm isotopes and heavier elements such as Bk and Cf in a nuclear reactor. In addition, both isotopes belong to the minor actinides with a large contribution to the decay heat and to the neutron emission in irradiated fuels. [...]
2019 - 8 p. - Published in : EPJ Web Conf. 211 (2019) 03008 Fulltext: PDF;
In : 5th International Workshop On Nuclear Data Evaluation for Reactor Applications, Aix-en-Provence, France, 8 - 12 Oct 2018, pp.03008
10.
Study of photon strength functions of $^{241}$Pu and $^{245}$Cm from neutron capture measurements / Mendoza, E (Madrid, CIEMAT) ; Alcayne, V (Madrid, CIEMAT) ; Cano-Ott, D (Madrid, CIEMAT) ; Kimura, A (JAEA, Ibaraki) ; Skarbeli, A V (Madrid, CIEMAT) ; Aberle, O (CERN) ; Amaducci, S (INFN, LNS ; Catania U.) ; Andrzejewski, J (Lodz U.) ; Audouin, L (Orsay, IPN) ; Babiano-Suarez, V (Valencia U., IFIC) et al.
We have measured theγ-rays following neutron capture on240Pu and244Cm at the n_TOF facility at CERN with the Total Absorption Calorimeter (TAC) and with C6D6 organic scintillators. The TAC is made of 40 BaF2 crystals operating in coincidence and covering almost the entire solid angle. [...]
2020 - 6 p. - Published in : EPJ Web Conf. 239 (2020) 01015
In : International Conference on Nuclear Data for Science and Technology (ND 2019), Beijing, China, 19 - 24 May 2019, pp.01015

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