6533b874fe1ef96bd12d6414

RESEARCH PRODUCT

Combined TL and 10B-alanine ESR dosimetry for BNCT

R. BorioAntonio BartolottaMaria BraiS. ManeraN. ForiniB. Lo GiudiceMaria Cristina D'ocaP. Salvadori

subject

inorganic chemicalsMaterials scienceBeryllium oxidechemistry.chemical_elementBoron Neutron Capture TherapyRadiationRisk AssessmentSensitivity and SpecificityThermoluminescencelaw.inventiondosimeters electron paramagnetic resonancespin resonancechemistry.chemical_compoundRadiation ProtectionIsotopeslawHumansDosimetryRadiology Nuclear Medicine and imagingBoronElectron paramagnetic resonanceBoronNeutronsRadiationRadiological and Ultrasound Technologybusiness.industryRadiotherapy Planning Computer-AssistedRadiochemistryElectron Spin Resonance SpectroscopyPublic Health Environmental and Occupational HealthReproducibility of ResultsRadiotherapy DosageGeneral MedicineSettore FIS/07 - Fisica Applicata(Beni Culturali Ambientali Biol.e Medicin)Neutron temperatureSystems IntegrationNeutron capturechemistryGamma RaysBody BurdenThermoluminescent DosimetryNuclear medicinebusinessRelative Biological Effectiveness

description

The dosimetric technique described in this paper is based on electron spin resonance (ESR) detectors using an alanine-boric compound acid enriched with 1 0 B, and beryllium oxide thermoluminescent (TL) detectors; with this combined dosimetry, it is possible to discriminate the doses due to thermal neutrons and gamma radiation in a mixed field. Irradiations were carried out inside the thermal column of a TRIGA MARK II water-pool-type research nuclear reactor, also used for Boron Neutron Capture therapy (BNCT) applications, with thermal neutron fluence from 10 9 to 10 1 4 n t h cm - 2 . The ESR dosemeters using the alanine-boron compound indicated ESR signals about 30-fold stronger than those using only alanine. Moreover, a negligible correction for the gamma contribution, measured with TL detectors, almost insensitive to thermal neutrons, was necessary. Therefore, a simultaneous analysis of our TL and ESR detectors allows discrimination between thermal neutron and gamma doses, as required in BNCT.

yearjournalcountryeditionlanguage
2004-01-01Radiation Protection Dosimetry
https://doi.org/10.1093/rpd/nch110