A5102821613- Nuclear Physics and Applications
- Nuclear reactor physics and engineering
- Radiation Detection and Scintillator Technologies
- Radiation Therapy and Dosimetry
- Nuclear physics research studies
- Particle Detector Development and Performance
- X-ray Spectroscopy and Fluorescence Analysis
- Nuclear Materials and Properties
- Educational Innovations and Technology
- E-Learning and Knowledge Management
- Particle accelerators and beam dynamics
- Muon and positron interactions and applications
- Knowledge Societies in the 21st Century
Istituto Nazionale di Fisica Nucleare, Sezione di Bari
2019-2023
Universidade de Santiago de Compostela
2013-2022
European Organization for Nuclear Research
2018
The radiative capture cross section of a highly pure (99.999%), 6.125(2) grams and 9.56(5)$\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}4}$ atoms/barn areal density $^{238}\mathrm{U}$ sample has been measured with the Total Absorption Calorimeter (TAC) in 185 m flight path at CERN neutron time-of-flight facility n_TOF. This measurement is response to NEA High Priority Request list, which demands an accuracy this less than 3% below 25 keV. These data have undergone careful background...
The $^{33}\mathrm{S}(n,\ensuremath{\alpha})^{30}\mathrm{Si}$ cross section has been measured at the neutron time-of-flight ($\mathrm{n}_\mathrm{TOF}$) facility CERN in energy range from 10 to 300 keV relative $^{10}\mathrm{B}(n,\ensuremath{\alpha})^{7}\mathrm{Li}$ cross-section standard. Both reactions were simultaneously with a set of micromegas detectors. flight path 185 m allowed us obtain high-energy resolution. An accurate description resonances performed by means multilevel...
The 241Am(n,γ) cross section has been measured at the n_TOF facility CERN with BaF2 Total Absorption Calorimeter in 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 than current evaluations, which contain only 150–160 eV. unresolved resonance region is perfectly consistent predictions based on average parameters deduced from resonances, thus obtaining full neutron under study. Below 20 our reasonable...
The accuracy on neutron capture cross section of fissile isotopes must be improved for the design future nuclear systems such as Gen-IV reactors and Accelerator Driven Systems. High Priority Request List Nuclear Energy Agency, which lists most important data requirements, includes also sections 233,235U 239,241Pu. A specific experimental setup has been used at CERN n_TOF facility measurement 235U by a set micromegas fission detectors placed inside segmented BaF2 Total Absorption Calorimeter.
Background: Stellar nucleosynthesis of elements heavier than iron is driven by neutron capture processes. $^{92}\mathrm{Zr}$ positioned at a strategic point along the slow path, given its proximity to magic number $N=50$ and position matching region between weak main processes.Purpose: In parallel with recent improved astronomical data, extraction accurate Maxwellian averaged cross sections (MACSs) derived from more complete set resonance parameters should allow for better understanding...
We measured the neutron capture-to-fission cross-section ratio ($\ensuremath{\alpha}$ ratio) and capture cross section of $^{235}\mathrm{U}$ between 0.2 200 eV at n_TOF facility CERN. The simultaneous measurement neutron-induced fission rates was performed by means ${\mathrm{BaF}}_{2}$ Total Absorption Calorimeter (TAC), used for detection $\ensuremath{\gamma}$ rays, in combination with a set micromegas detectors as tagging detectors. energy dependence obtained help $^{6}\mathrm{Li}(n,t)$...
Thin 33S samples for the study of 33S(n,α)30Si cross-section at n_TOF facility CERN were made by thermal evaporation powder onto a dedicated substrate kapton covered with thin layers copper, chromium and titanium. This method has provided first time bare sulfur few centimeters in diameter. The have shown an excellent adherence no mass loss after years sublimation vacuum room temperature. determination thickness been performed means Rutherford backscattering spectrometry. successfully tested...
The 236U isotope plays an important role in nuclear systems, both for future and currently operating ones. actual knowledge of the capture reaction this is satisfactory thermal region, but it considered insufficient Fast Reactor ADS applications. For reason 236U(n, γ) cross-section has been measured first time whole energy region from up to 1 MeV at n_TOF facility with two different detection systems: array C6D6 detectors, employing total deposited method, a FX1 absorption calorimeter (TAC),...
New neutron cross section measurements of minor actinides have been performed recently in order to reduce the uncertainties evaluated data, which is important for design advanced nuclear reactors and, particular, determining their performance transmutation waste. We measured 241Am(n,γ) at n_TOF facility between 0.2 eV and 10 keV with a BaF2 Total Absorption Calorimeter, analysis measurement has concluded. Our results are reasonable agreement below 20 ones published by C. Lampoudis et al....
The importance of improving the accuracy on capture cross-section 238U has been addressed by Nuclear Energy Agency, since its uncertainty significantly affects uncertainties key design parameters for both fast and thermal nuclear reactors. Within 7th framework programme ANDES European Commission three different measurements have carried out with aim providing 238U(n,γ) an which varies from 1 to 5%, depending energy range. Hereby final results measurement performed at n_TOF CERN facility in a...