Listar por autor "Casanovas Hoste, Adrià"
Mostrando ítems 1-20 de 38
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7Be(n , p)7Li reaction and the cosmological lithium problem: measurement of the cross section in a wide energy range at n_TOF at CERN
(American Institute of Physics (AIP), 2018-07-24)
Artículo
Acceso abiertoWe report on the measurement of the 7Be(n,p)7Li cross section from thermal to approximately 325 keV neutron energy, performed in the high-flux experimental area (EAR2) of the n_TOF facility at CERN. This reaction plays a ... -
7Be(n,alpha) and 7Be(n,p) cross-section measurement for the cosmological lithium problem at the n TOF facility at CERN
(EDP Sciences, 2016)
Comunicación de congreso
Acceso abiertoThe Cosmological Lithium Problem refers to the large discrepancy between the abundance of primordial 7Li predicted by the standard theory of Big Bang Nucleosynthesis and the value inferred from the so-called “Spite plateau” ... -
A compact fission detector for fission-tagging neutron capture experiments with radioactive fissile isotopes
(2020-04-21)
Artículo
Acceso abiertoIn the measurement of neutron capture cross-sections of fissile isotopes, the fission channel is a source of background which can be removed efficiently using the so-called fission-tagging or fission-veto technique. For ... -
A first prototype of C6D6 total-energy detector with SiPM readout for neutron capture time-of-flight experiments
(2021-01-01)
Artículo
Acceso abiertoLow efficiency total-energy detectors (TEDs) are one of the main tools for neutron capture cross section measurements utilizing the time-of-flight (TOF) technique. State-of-the-art TEDs are based on a CD liquid-scintillation ... -
Be-7(n,alpha)He-4 reaction and the cosmological lithium problem: measurement of the cross section in a wide energy range at n_TOF at CERN
(2016-10-03)
Artículo
Acceso abiertoThe energy-dependent cross section of the Be7(n,alpha)He4 reaction, of interest for the so-called cosmological lithium problem in big bang nucleosynthesis, has been measured for the first time from 10 meV to 10 keV neutron ... -
Characterization of the n TOF EAR-2 neutron beam
(EDP Sciences, 2016)
Comunicación de congreso
Acceso abiertoThe experimental area 2 (EAR-2) at CERNs neutron time-of-flight facility (n TOF), which is operational since 2014, is designed and built as a short-distance complement to the experimental area 1 (EAR-1). The Parallel Plate ... -
Constraints on the dipole photon strength for the odd uranium isotopes
(American Physical Society, 2022-02-01)
Artículo
Acceso abiertoNuclear level densities (NLDs) and photon strength functions (PSFs), also called ¿ -ray or radiation strength functions, represent average properties of the nucleus in the regime of excitation where individual levels and ... -
Cross section measurements of 155,157Gd(n,gamma) induced by thermal and epithermal neutrons
(2019-01-28)
Artículo
Acceso abiertoNeutron capture cross section measurements on 155Gd and 157Gd were performed using the time-of-flight technique at the n_TOF facility at CERN on isotopically enriched samples. The measurements were carried out in the n_TOF ... -
Dissemination of data measured at the CERN n TOF facility
(EDP Sciences, 2016)
Comunicación de congreso
Acceso abiertoThe n TOF neutron time-of-flight facility at CERN is used for high quality nuclear data measurements from thermal energy up to hundreds of MeV. In line with the CERN open data policy, the n TOF Collaboration takes actions ... -
Experimental setup and procedure for the measurement of the 7Be(n,p)7Li reaction at n_TOF
(2018-04-11)
Artículo
Acceso abiertoFollowing the completion of the second neutron beam line and the related experimental area (EAR2) at the n_TOF spallation neutron source at CERN, several experiments were planned and performed. The high instantaneous neutron ... -
First results of the140ce(N,¿)141ce cross-section measurement at n_tof
(2021-06-01)
Artículo
Acceso abiertoAn accurate measurement of the 140Ce(n,¿) energy-dependent cross-section was performed at the n_TOF facility at CERN. This cross-section is of great importance because it represents a bottleneck for the s-process nucleosynthesis ... -
Fission program at n_TOF
(EPJ Web of Conferences, 2019)
Texto en actas de congreso
Acceso abiertoSince its start in 2001 the n_TOF collaboration developed a measurement program on fission, in view of advanced fuels in new generation reactors. A special effort was made on measurement of cross sections of actinides, ... -
High-accuracy determination of the neutron flux in the new experimental area n_TOF-EAR2 at CERN
(2017-10-27)
Artículo
Acceso abiertoA new high flux experimental area has recently become operational at the n_TOF facility at CERN. This new measuring station, n_TOF-EAR2, is placed at the end of a vertical beam line at a distance of approximately 20m from ... -
Measurement of the 154Gd(n,gamma) cross section and its astrophysical implications
(Elsevier, 2020-05-10)
Artículo
Acceso abiertoThe neutron capture cross section of 154Gd was measured from 1 eV to 300 keV in the experimental area located 185 m from the CERN n_TOF neutron spallation source, using a metallic sample of gadolinium, enriched to 67% in ... -
Measurement of the 235U(n, f) cross section relative to the 6Li(n, t) and 10B(n, a) standards from thermal to 170 keV neutron energy range at n_TOF
(2019-07-26)
Artículo
Acceso abiertoThe 235U(n, f ) cross section was measured at n_TOF relative to 6Li(n, t) and 10B(n,a) , with high resolution ( L=183.49(2) m) and in a wide energy range (25meV-170keV) with 1.5% systematic uncertainty, making use of a ... -
Measurement of the 235U(n,f) cross section relative to the 6Li(n,t) and 10B(n,a) standards from thermal to 170 keV neutron energy range at n_TOF
(2019-02-27)
Report de investigación
Acceso abiertoThe 235U(n,f) cross section was measured in a wide energy range at n_TOF relative to 6Li(n,t) and 10B(n,alpha), with high resolution and in a wide energy range, with a setup based on a stack of six samples and six silicon ... -
Measurement of the 244Cm and 246Cm neutron-induced capture cross sections at the n_TOF facility
(EPJ Web of Conferences, 2019)
Texto en actas de congreso
Acceso abiertoThe neutron capture reactions of the 244Cm and 246Cm isotopes open the path for the formation of heavier Cm isotopes and heavier elements such asThe neutron capture reactions of the 244Cm and 246Cm isotopes open the path ... -
Measurement of the 72Ge(n,¿) cross section over a wide neutron energy range at the CERN n_TOF facility
(American Physical Society, 2021-04-01)
Artículo
Acceso abiertoThe 72 Ge ( n , ¿ ) cross section was measured for neutron energies up to 300 keV at the neutron time-of-flight facility n _ TOF (CERN), Geneva, for the first time covering energies relevant to heavy-element synthesis in ... -
Measurement of the radiative capture cross section of the s-process branching points 204Tl and 171Tm at the n_TOF facility (CERN)
(EPJ Web of Conferences, 2018)
Texto en actas de congreso
Acceso abiertoThe neutron capture cross section of some unstable nuclei is especially relevant for s-process nucleosynthesis studies. This magnitude is crucial to determine the local abundance pattern, which can yield valuable information ... -
Monte Carlo simulations of the n TOF lead spallation target with the Geant4 toolkit: A benchmark study
(EDP Sciences, 2016)
Comunicación de congreso
Acceso abiertoMonte Carlo (MC) simulations are an essential tool to determine fundamental features of a neutron beam, such as the neutron flux or the ¿ -ray background, that sometimes can not be measured or at least not in every position ...
