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Mostrando ítems 31-40 de 134
Artículo
First results of the 230Th(n,f) cross section measurements at the CERN n_TOF facility
(EDP Sciences, 2020)
The study of neutron-induced reactions on actinides is of considerable importance for the design of advanced nuclear systems and alternative fuel cycles. Specifically, 230Th is produced from the α-decay of 234U as a byproduct ...
Artículo
High-accuracy determination of the 238U/ 235U fission cross section ratio up to ≈ 1 GeV at n_TOF at CERN
(American Physical Society, 2015)
The 238U to 235U fission cross section ratio has been determined at n_TOF up to ≈1 GeV, with two different detection systems, in different geometrical configurations. A total of four datasets has been collected and compared. ...
Artículo
Monte carlo simulations of the n-TOF lead spallation target with the Geant4 toolkit: A benchmark study
(EDP Sciences, 2017)
Monte Carlo (MC) simulations are an essential tool to determine fundamental features of a neutron beam, such as the neutron flux or the γ-ray background, that sometimes can not be measured or at least not in every position ...
Artículo
Neutron cross-sections for advanced nuclear systems: the n_TOF project at CERN
(EDP Sciences, 2014)
The study of neutron-induced reactions is of high relevance in a wide variety of fields, ranging from stellar nucleosynthesis and fundamental nuclear physics to applications of nuclear technology. In nuclear energy, high ...
Artículo
A new CVD Diamond Mosaic-Detector for (n, α ) Cross-Section Measurements at the n TOF Experiment at CERN
(Elsevier, 2013)
At the n\_TOF experiment at CERN a dedicated single-crystal chemical vapor deposition (sCVD) Diamond Mosaic-Detector has been developed for (n,alpha) cross-section measurements. The detector, characterized by an excellent ...
Artículo
Fission Fragment Angular Distribution measurements of 235U and 238U at CERN n-TOF facility
(EDP Sciences, 2016)
Neutron-induced fission cross sections of 238U and 235U are used as standards in the fast neutron region up to 200 MeV. A high accuracy of the standards is relevant to experimentally determine other neutron reaction cross ...
Artículo
Preparation and characterization of 33-S samples for 33-S(n,alpha)30-Si cross-section measurements at the n_TOF facility at CERN
(Elsevier, 2018-02-15)
Thin 33S samples for the study of the 33S(n,a)30Si cross-section at the n_TOF facility at CERN were made by thermal evaporation of 33S powder onto a dedicated substrate made of kapton covered with thin layers of copper, ...
Artículo
Angular distribution in the neutron-induced fission of actinides
(EDP Sciences, 2013)
Above 1 MeV of incident neutron energy the fission fragment angular distribution (FFAD) has generally a strong anisotropic behavior due to the combination of the incident orbital momentum and the intrinsic spin of the ...
Tesis Doctoral
Microdosimetry applied to proton radiotherapy
(2020-09-21)
El uso de la radioterapia con protones como tratamiento contra el cáncer es cada vez más común. Sus actuales indicaciones clínicas se basan en las propiedades físicas de los haces de protones, aceptando una efectividad biológica ...
Artículo
Silicon-based three-dimensional microstructures for radiation dosimetry in hadrontherapy
(AIP Publishing, 2015)
In this work, we propose a solid-state-detector for use in radiation microdosimetry. This device improves the performance of existing dosimeters using customized 3D-cylindrical microstructures etched inside silicon. The ...