Exploració per tema "Radioisotopes"
Ara es mostren els items 1-15 de 15
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Astrophysical Implications of the139La(n,gamma) and151Sm(n,gamma) Cross Section Measured at n_TOF
(2006)
Text en actes de congrés
Accés obertThe nuclear resonance parameters and the capture cross section of the neutron magic isotope 139La and of the radioactive isotope 151Sm have been measured relative to 197Au in the energy range of 0.6 eV-1 MeV at neutron ... -
Comparison of different sampling methods for the determination of low-level radionuclides in air
(2016-03-01)
Article
Accés obertThe aim of this work is to check the consistency of results given by different air dust samplers (flow-rates between 2 and 700 m(3)/h) and measurement protocols at a single location. The study is focussed on (210)pb since ... -
Contribution of phases segregated from the UO2 matrix to the release of radionuclides from spent nuclear fuel and duration of the Instant Release Fraction (IRF)
(Elsevier, 2020-04-15)
Article
Accés obertDuring the dissolution of the spent nuclear fuel (SNF) some radionuclides are released to the solution simultaneously from different sources in the fuel. This is of particular importance to some radionuclides that contribute ... -
Estudio y construcción de un sensor selectivo de cesio para monitorización de procesos de adsorción
(Universitat Politècnica de Catalunya, 2017-09)
Projecte/Treball Final de Carrera
Accés obertLa generación y acumulación de residuos radiactivos procedentes del combustible nuclear gastado que utilizan las centrales nucleares constituye un problema para el medio ambiente debido a su compleja manipulación y gestión. ... -
Experimental analysis of the mass eficiency curve for gross alphya activity and morphological study of the residue obtained by the co-precipitation method
(2012-08)
Article
Accés restringit per política de l'editorialGross alpha activity determination in drinking water is one of the radiological parameters that must be determined in order to decide whether further specific analyses of radionuclides in samples is required. This parameter ... -
Influence of long-range atmospheric transport pathways and climate teleconnection patterns on the variability of surface Pb-210 and Be-7 concentrations in southwestern Europe
(Elsevier, 2016-12-01)
Article
Accés obertThe variability of the atmospheric concentration of the 7Be and 210Pb radionuclides is strongly linked to the origin of air masses, the strength of their sources and the processes of wet and dry deposition. It has been ... -
Measurement of the neutron capture cross section of the fissile isotope 235U with the CERN n TOF total absorption calorimeter and a fission tagging based on micromegas detectors
(EDP Sciences, 2016)
Comunicació de congrés
Accés obertThe accuracy on neutron capture cross section of fissile isotopes must be improved for the design of future nuclear systems such as Gen-IV reactors and Accelerator Driven Systems. The High Priority Request List of the ... -
Production of short-lived radioactive nuclei in super asymptotic giant branch star
(2012-08-08)
Article
Accés obert -
Progress on nuclear reaction rates affecting the stellar production of 26Al
(Institute of Physics (IOP), 2023-02-28)
Article
Accés obertThe radioisotope 26Al is a key observable for nucleosynthesis in the Galaxy and the environment of the early Solar System. To properly interpret the large variety of astronomical and meteoritic data, it is crucial to ... -
Se(IV) immobilization onto natural siderite: implications for high-level nuclear waste repositories
(2021-07-01)
Article
Accés obertSorption processes of metals and semimetals on siderite are studied because of its potential adequacy for removing contaminants from natural waters and its wide availability, as well as its capacity to reduce the oxidation ... -
Summary of the euratom collaborative project FIRST-nuclides and conclusions for the safety case
(2017-06)
Article
Accés restringit per política de l'editorialA consortium of 10 partners from seven European countries and the European Commission collaborated in investigating the short-term release of radionuclides from disposed spent nuclear fuel upon canister failure. The ... -
The 93-Zr(n,gamma) reaction up to 8 keV neutron energy
(2013-01-31)
Article
Accés restringit per política de l'editorialhe (n,gamma) reaction of the radioactive isotope 93Zr has been measured at the n_TOF high-resolution time-of-flight facility at CERN. Resonance parameters have been extracted in the neutron energy range up to 8 keV,yielding ... -
Tune up a measurement method for the Na-22 on the atmospheric air.
(Universitat Politècnica de Catalunya, 2016-01-12)
Treball Final de Grau
Accés obertThis report is based on the study of 22Na in the atmospheric air, is focused to know the seasonality of this radionuclide, compare it with another cosmogenic radionuclide, check the efficiency of the applied detection ... -
Validation of aerosol low-level activities by comparison with a deep underground laboratory
(2014-05)
Article
Accés restringit per política de l'editorialThe activitiesonair filters oftheradionuclides 40K and 137Cs weremeasuredinanaboveground laboratoryandcomparedwiththeactivitiesmeasuredinanundergroundlaboratory.Theaverage relativedifferenceswerelowerthan20%for 137Cs and ... -
Xenon-133 and caesium-137 releases into the atmosphere from the Fukushima Dai-ichi nuclear power plant: Determination of the source term, atmospheric dispersion, and deposition
(2012-03-01)
Article
Accés obertOn 11 March 2011, an earthquake occurred about 130 km off the Pacific coast of Japan's main island Honshu, followed by a large tsunami. The resulting loss of electric power at the Fukushima Dai-ichi nuclear power plant ...