Search Results - "Roteta, Miguel"
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Carbon-based thin films as a suitable alternative to metallized films for the preparation of radioactive sources
Published in Applied radiation and isotopes (01-10-2024)“…A new method for radionuclide labeling by the use of graphene thin films was previously presented. In this work, a comparison among low energy radioactive…”
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Standardization of Sn-113
Published in Applied radiation and isotopes (01-05-2014)“…The radionuclide 113Sn is a quasi-monoenergetic gamma emitter often used in the efficiency calibration of gamma spectrometers in the energy region around…”
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Measurement of the half-life of super(68)Ga
Published in Applied radiation and isotopes (01-05-2014)“…The half-life of the positron-emitter super(68)Ga has been measured by following the decay rate with two systems based on ionization chamber and Ge detectors…”
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Measurement of the half-life of 68Ga
Published in Applied radiation and isotopes (01-05-2014)“…The half-life of the positron-emitter 68Ga has been measured by following the decay rate with two systems based on ionization chamber and Ge detectors. The…”
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Preparation of graphene thin films for radioactive samples
Published in Applied radiation and isotopes (01-03-2016)“…A new method for the preparation of conductive thin films is presented. The metallization of VYNS films guarantees the electrical conductivity but it results…”
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Standardization of Ga-68 by coincidence measurements, liquid scintillation counting and 4πγ counting
Published in Applied radiation and isotopes (01-09-2012)“…The radionuclide 68Ga is one of the few positron emitters that can be prepared in-house without the use of a cyclotron. It disintegrates to the ground state of…”
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On the standardization of positron emitters by 4 π γ counting
Published in Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment (2007)“…This paper focuses on the application of the method known as “ 4 π γ counting” to the standardization of positron emitters. Measurements and Monte Carlo…”
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The half-life of 18F
Published in Applied radiation and isotopes (01-07-2010)“…The half-life of the positron-emitter 18F has been measured by following the decay rate with three systems: ionization chambers, Ge detectors and coincidence…”
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Calculation of electron deposition in proportional counters
Published in Applied radiation and isotopes (01-10-2006)“…Efficiency extrapolation is a common technique in the standardization of radionuclides by the technique of 4 πβ– γ coincidences. It can be achieved in two…”
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Standardization of 67Ga by 4pigamma (NaI) and 4pibeta-gamma coincidence methods
Published in Applied radiation and isotopes (01-02-2004)“…The nuclide 67Ga is widely used in nuclear medicine for diagnostic purposes. It decays with a half-life of 3.259 days to 67Zn, a stable nuclide. The decay mode…”
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Standardization of 67Ga by 4 πγ (NaI) and 4 πβ– γ coincidence methods
Published in Applied radiation and isotopes (01-02-2004)“…The nuclide 67Ga is widely used in nuclear medicine for diagnostic purposes. It decays with a half-life of 3.259 days to 67Zn, a stable nuclide. The decay mode…”
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Standardization of 18F by coincidence and LSC methods
Published in Applied radiation and isotopes (01-10-2006)“…The nuclide 18F disintegrates to 18O by β + emission (96.86%) and electron capture (3.14%) with a half-life of 1.8288 h. It is widely used in nuclear medicine…”
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α-particle emission probabilities in the decay of 235U
Published in Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment (01-09-2005)“…235U decays by α-particle emission to 231Th. The decay scheme of this nuclide is very complex, with more than 20 alpha branches. Recommended values for P α of…”
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Determination of multipolarities and mixing ratios of some γ transitions following 125Sb decay by γ– γ Angular Correlation
Published in Applied radiation and isotopes (01-08-1998)“…125Sb decays by β − emission to 125Te with a half-life of 2.76 years. The angular correlations of some γ-ray transitions of this decay have been studied in…”
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An evaluation of the influence of γ—γ angular correlation on the coincidence-summing corrections in γ-ray spectrometry
Published in Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment (01-02-1996)“…The effect of angular correlation on coincidence-summing corrections has been evaluated for three detectors (planar Ge, coaxial Ge and well NaI), at different…”
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Recent advances in digital coincidence counting for Radionuclide Metrology
Published in 2013 3rd International Conference on Advancements in Nuclear Instrumentation, Measurement Methods and their Applications (ANIMMA) (01-06-2013)“…The radioactivity measurement techniques developed within the EURAMET EMRP "MetroFission" Joint Research Project, were aimed at performing on-site activity…”
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