Search results for "NCT dosimetry"

showing 3 items of 3 documents

Comparison of EPR response of alanine and Gd2O3-alanine dosimeters exposed to TRIGA Mainz reactor.

2015

In this work we report some preliminary results regarding the analysis of electron paramagnetic resonance (EPR) response of alanine pellets and alanine pellets added with gadolinium used for dosimetry at the TRIGA research reactor in Mainz, Germany. Two set-ups were evaluated: irradiation inside PMMA phantom and irradiation inside boric acid phantom. We observed that the presence of Gd2O3 inside alanine pellets increases the EPR signal by a factor of 3.45 and 1.24 in case of PMMA and boric acid phantoms, respectively. We can conclude that in the case of neutron beam with a predominant thermal neutron component the addition of gadolinium oxide can significantly improve neutron sensitivity of…

AlanineRadiationAlanineChemistrySettore ING-IND/18 - Fisica Dei Reattori NucleariSettore ING-IND/20 - Misure E Strumentazione NucleariGadoliniumRadiochemistrySettore FIS/01 - Fisica SperimentalePelletschemistry.chemical_elementGadoliniumNeutron radiationequipment and suppliesNeutron temperatureSettore FIS/07 - Fisica Applicata(Beni Culturali Ambientali Biol.e Medicin)law.inventionNCT dosimetrylawElectron spin resonanceNeutronTriga reactor MainzIrradiationElectron paramagnetic resonanceNuclear chemistry
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Testing and linearity calibration of films of phenol compounds exposed to thermal neutron field for EPR dosimetry

2015

This paper reports the preliminary results obtained by Electron Paramagnetic Resonance (EPR) measurements on films of IRGANOX® 1076 phenols with and without low content (5% by weight) of gadolinium oxide (Gd2O3) exposed in the thermal column of the Triga Mark II reactor of LENA (Laboratorio Energia Nucleare Applicata) of Pavia (Italy). Thanks to their size, the phenolic films here presented are good devices for the dosimetry of beams with high dose gradient and which require accurate knowledge of the precise dose delivered. The dependence of EPR signal as function of neutron dose was investigated in the fluence range between 10(11) cm(-2) and 10(14) cm(-2). Linearity of EPR response was fou…

Settore ING-IND/20 - Misure E Strumentazione NucleariAnalytical chemistryGadoliniumFluenceTRIGAlaw.inventionNCT dosimetrychemistry.chemical_compoundPhenolslawCalibrationPhenolDosimetryIrradiationElectron paramagnetic resonanceNeutron beamNeutronsRadiationPhenolSettore ING-IND/18 - Fisica Dei Reattori NucleariSettore FIS/01 - Fisica SperimentaleElectron Spin Resonance SpectroscopyNeutron temperatureSettore FIS/07 - Fisica Applicata(Beni Culturali Ambientali Biol.e Medicin)Electron Paramagnetic ResonancechemistryCalibrationNuclear chemistry
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Study of the response of phenol compounds exposed to thermal neutrons beams for Electron Paramagnetic Resonance dosimetry

2015

Abstract This paper reports the results regarding a new organic compound (IRGANOX ® 1076 phenols) with and without low content (5% by weight) of gadolinium oxide (Gd 2 O 3 ) for Electron Paramagnetic Resonance (EPR) dosimetry of neutron beams. The dependence of EPR signal as function of neutron dose was investigated in the fluence range studied between 10 11  cm −2 to 10 14  cm −2 . We evaluated also the effect of gadolinium on 60 Co gamma photon sensitivity of this organic compound. Our analysis showed that a low concentration of gadolinium oxide (of the order of 5% of the total mass of the dosimeter) can enhance the thermal neutron sensitivity more than 10 times with a small reduction of …

inorganic chemicalsRadiationDosimeterChemistrySettore ING-IND/18 - Fisica Dei Reattori NucleariSettore ING-IND/20 - Misure E Strumentazione NucleariGadoliniumRadiochemistrySettore FIS/01 - Fisica Sperimentalechemistry.chemical_elementGadoliniumFluenceNeutron temperatureSettore FIS/07 - Fisica Applicata(Beni Culturali Ambientali Biol.e Medicin)law.inventionElectron Paramagnetic ResonanceNCT dosimetryPhenolslawDosimetryNeutronIrradiationElectron paramagnetic resonanceInstrumentationNeutron beam
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