V. Bécares
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View article: Measurement of the $^{35}Cl(n, p)^{35}S$ cross-section at the CERN n\_TOF facility from subthermal energy to 120 keV
Measurement of the $^{35}Cl(n, p)^{35}S$ cross-section at the CERN n\_TOF facility from subthermal energy to 120 keV Open
Background: The $^{35}Cl(n, p)^{35}S$ reaction is of special interest in three different applications. First, in Boron Neutron Capture Therapy due to the presence of $^{35}Cl$ in brain and skin tissue. Second, it is involved in the creatio…
View article: Measurement and analysis of the $$^{246}$$Cm and $$^{248}$$Cm neutron capture cross-sections at the EAR2 of the n_TOF facility at CERN
Measurement and analysis of the $$^{246}$$Cm and $$^{248}$$Cm neutron capture cross-sections at the EAR2 of the n_TOF facility at CERN Open
The $$^{246}$$ Cm(n, $$\gamma $$ ) and $$^{248}$$ Cm(n, $$\gamma $$ ) cross-sections have been measured at the Experimental Area 2 (EAR2) of the n_TOF facility at CERN with three C $$_6$$ D $$_6$$ detectors. This measuremen…
View article: Radiative neutron capture cross section of $^{242}$Pu measured at n_TOF-EAR1 in the unresolved resonance region up to 600 keV
Radiative neutron capture cross section of $^{242}$Pu measured at n_TOF-EAR1 in the unresolved resonance region up to 600 keV Open
The design of fast reactors burning MOX fuels requires accurate capture and fission cross sections. For the particular case of neutron capture on 242Pu, the NEA recommends that an accuracy of 8-12% should be achieved in the fast energy reg…
View article: Shedding Light on the Origin of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>Pb</mml:mi></mml:mrow><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>204</mml:mn></mml:mrow></mml:mmultiscripts></mml:mrow></mml:math>, the Heaviest <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>s</mml:mi></mml:mrow></mml:math>-Process–Only Isotope in the Solar System
Shedding Light on the Origin of , the Heaviest -Process–Only Isotope in the Solar System Open
Asymptotic giant branch stars are responsible for the production of most of the heavy isotopes beyond Sr observed in the solar system. Among them, isotopes shielded from the r-process contribution by their stable isobars are defined as s-o…
View article: Measurement and analysis of the $^{246}$Cm and $^{248}$Cm neutron capture cross-sections at the EAR2 of the n TOF facility
Measurement and analysis of the $^{246}$Cm and $^{248}$Cm neutron capture cross-sections at the EAR2 of the n TOF facility Open
The $^{246}$Cm(n,$\gamma$) and $^{248}$Cm(n,$\gamma$) cross-sections have been measured at the Experimental Area 2 (EAR2) of the n_TOF facility at CERN with three C$_6$D$_6$ detectors. This measurement is part of a collective effort to imp…
View article: Sensitivity and uncertainty analyses for advanced nuclear systems (ALFRED, ASTRID, ESFR and MYRRHA)
Sensitivity and uncertainty analyses for advanced nuclear systems (ALFRED, ASTRID, ESFR and MYRRHA) Open
Within the frame of the EU H2020 program SANDA project, sensitivity and uncertainty analyses have been performed for the ESFR, ASTRID and ALFRED reactor concepts and the multi-purpose flexible irradiation facility MYRRHA. Relevant reactor …
View article: Design of a high performance Digital data AcquIsition SYstem (DAISY) for innovative nuclear experiments
Design of a high performance Digital data AcquIsition SYstem (DAISY) for innovative nuclear experiments Open
A dedicated digital data acquisition (DAQ) system has been developed for innovative nuclear data measurements, from time-of-flight to irradiation experiments as well as other basic nuclear physics experiments. The DAQ system is based on fa…
View article: Measurement of the <sup>241</sup>Am(n,γ) cross section at the n_TOF facility at CERN
Measurement of the <sup>241</sup>Am(n,γ) cross section at the n_TOF facility at CERN Open
The neutron capture cross section of 241 Am is an important quantity for nuclear energy production and fuel cycle scenarios. Several measurements have been performed in recent years with the aim to reduce existing uncertainties in evaluate…
View article: Results of the <sup>244</sup>Cm, <sup>246</sup>Cm and <sup>248</sup>Cm neutron-induced capture cross sections measurements at EAR1 and EAR2 of the n_TOF facility
Results of the <sup>244</sup>Cm, <sup>246</sup>Cm and <sup>248</sup>Cm neutron-induced capture cross sections measurements at EAR1 and EAR2 of the n_TOF facility Open
Accurate neutron capture cross section data for minor actinides (MAs) are required to estimate the production and transmutation rates of MAs in light water reactors, critical fast reactors like Gen-IV systems, and other innovative reactor …
View article: Measurement of the $^{14}$N(n,p)$^{14}$C cross section at the CERN n_TOF\n facility from sub-thermal energy to 800 keV
Measurement of the $^{14}$N(n,p)$^{14}$C cross section at the CERN n_TOF\n facility from sub-thermal energy to 800 keV Open
Background: The $^{14}$N(n,p)$^{14}$C reaction is of interest in neutron\ncapture therapy, where nitrogen-related dose is the main component due to\nlow-energy neutrons, and in astrophysics, where 14N acts as a neutron poison in\nthe s-pro…
View article: Constraints on the dipole photon strength for the odd uranium isotopes
Constraints on the dipole photon strength for the odd uranium isotopes Open
Background: The photon strength functions (PSFs) and nuclear level density (NLD) are key ingredients for calculation of the photon interaction with nuclei, in particular the reaction cross sections. These cross sections are important espec…
View article: Radiative Neutron Capture Cross-Section Measurement of Ge Isotopes at n_TOF CERN Facility and Its Importance for Stellar Nucleosynthesis
Radiative Neutron Capture Cross-Section Measurement of Ge Isotopes at n_TOF CERN Facility and Its Importance for Stellar Nucleosynthesis Open
This manuscript summarizes the results of radiative neutron capture cross-section measurements on two stable germanium isotopes, $^{70}$Ge and $^{73}$Ge. Experiments were performed at the n_TOF facility at CERN via the time-of-flight techn…
View article: EXTENDED MSM METHOD TO ESTIMATE THE REACTIVITY OF A SUB-CRITICAL CORE DRIVEN BY AN ACCELERATOR BASED NEUTRON SOURCE
EXTENDED MSM METHOD TO ESTIMATE THE REACTIVITY OF A SUB-CRITICAL CORE DRIVEN BY AN ACCELERATOR BASED NEUTRON SOURCE Open
The Modified Source Multiplication method is used to determine an unknown reactivity level of a reactor from a known one if one has access to the detector counting for both levels when the reactor is fed by a constant neutron source like a…
View article: Extended MSM method to estimate the reactivity of a sub-critical core driven by an accelerator based neutron source
Extended MSM method to estimate the reactivity of a sub-critical core driven by an accelerator based neutron source Open
\nThe Modified Source Multiplication method is used to determine an unknown reactivity level of a reactor from a known one if one has access to the detector counting for both levels when the reactor is fed by a constant neutron source like…
View article: Measurement of the <sup>242</sup>Pu(n, <i>γ</i>) cross section from thermal to 500 keV at the Budapest research reactor and CERN n_TOF-EAR1 facilities
Measurement of the <sup>242</sup>Pu(n, <i>γ</i>) cross section from thermal to 500 keV at the Budapest research reactor and CERN n_TOF-EAR1 facilities Open
The design and operation of innovative nuclear systems requires a better knowledge of the capture and fission cross sections of the Pu isotopes. For the case of capture on 242 Pu, a reduction of the uncertainty in the fast region down to 8…
View article: Neutron capture cross section measurements of <sup>241</sup>Am at the n_TOF facility
Neutron capture cross section measurements of <sup>241</sup>Am at the n_TOF facility Open
Neutron capture on 241 Am plays an important role in the nuclear energy production and also provides valuable information for the improvement of nuclear models and the statistical interpretation of the nuclear properties. A new experiment …
View article: Study of photon strength functions of<sup>241</sup>Pu and<sup>245</sup>Cm from neutron capture measurements
Study of photon strength functions of<sup>241</sup>Pu and<sup>245</sup>Cm from neutron capture measurements Open
We have measured the γ -rays following neutron capture on 240 Pu and 244 Cm 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 coi…
View article: Measurement of the<sup>244</sup>Cm capture cross sections at both CERN n_TOF experimental areas
Measurement of the<sup>244</sup>Cm capture cross sections at both CERN n_TOF experimental areas Open
Accurate neutron capture cross section data for minor actinides (MAs) are required to estimate the production and transmutation rates of MAs in light water reactors with a high burnup, critical fast reactors like Gen-IV systems and other i…
View article: Measurement of 73Ge(n,γ) cross sections and implications for stellar nucleosynthesis
Measurement of 73Ge(n,γ) cross sections and implications for stellar nucleosynthesis Open
73Ge(n,γ) cross sections were measured at the neutron time-of-flight facility n_TOF at CERN up to neutron energies of 300 keV, providing for the first time experimental data above 8 keV. Results indicate that the stellar cross section at k…
View article: Study of the photon strength functions and level density in the gamma decay of the n + <sup>234</sup>U reaction
Study of the photon strength functions and level density in the gamma decay of the n + <sup>234</sup>U reaction Open
The accurate calculations of neutron-induced reaction cross sections are relevant for many nuclear applications. The photon strength functions and nuclear level densities are essential inputs for such calculations. These quantities for 235…
View article: (n,cp) reactions study at the n_TOF facility at CERN: results for the Cosmological Lithium problem
(n,cp) reactions study at the n_TOF facility at CERN: results for the Cosmological Lithium problem Open
The Big Bang Nucleosynthesis describes the production of the lightest nuclides from deuterium to Li at the early stages of the Universe. While a general good agreement is found for most of the isotopes involved in the synthesis, a serious …