Search results for "Low energy photons"

showing 2 items of 2 documents

Characterization of the ESR response of alanine dosimeters to low-energy Cu-target X-tube photons

2017

Abstract This article describes Electron Spin Resonance (ESR) response measurements of Kodak BioMax alanine films exposed to low-energy X-rays from a Cu-target tube operating at 20 kV. Commercial alanine detectors were used to ensure maximum reproducibility of the results, while the choice of a film was due the low penetration of the soft X-rays. X-ray energy spectra and fluences were determined with an innovative digital semiconductor detector system. These data were used to quantify the irradiation of the alanine films in terms of absorbed dose to water. The alanine films were found to present a stable response, highly linear with dose. To our knowledge, these data have not been previousl…

Materials sciencePhotonSettore ING-IND/20 - Misure E Strumentazione NucleariAnalytical chemistrySynchrotron radiationElectron Spin Resonance030218 nuclear medicine & medical imaginglaw.invention03 medical and health sciences0302 clinical medicineNuclear magnetic resonancelawIrradiationElectron paramagnetic resonanceInstrumentationAlanineAlanine; Electron Spin Resonance; Low energy photons; Radiation; InstrumentationDosimeterLow energy photonsRadiationAlanineSettore FIS/01 - Fisica SperimentaleLow energy photonequipment and suppliesSettore FIS/07 - Fisica Applicata(Beni Culturali Ambientali Biol.e Medicin)Semiconductor detector030220 oncology & carcinogenesisAbsorbed dose
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Alanine films for EPR dosimetry of low-energy (1–30 keV) X-ray photons

2019

Abstract L- α -alanine has aroused considerable interest for use in radiation EPR dosimetry and has been formally accepted as a secondary standard for high-dose (kGy) and transfer dosimetry of high-energy photons and electrons. In this work, we extended the investigation of the energy response of alanine EPR films in the low energy range for X-photons (1–30 keV). Electron Paramagnetic Resonance (EPR) measurements were performed on Kodak BioMax alanine films exposed to low-energy X-rays from a Cu-, W- and Mo-targets tube operating at voltages up to 30 kV. Films were chosen because of the low penetration of the soft X-rays used. The response of alanine to low-energy X-rays was characterized e…

Nuclear and High Energy PhysicsAlanineLow energy photonsPhotonMaterials scienceAttenuationMonte Carlo methodSynchrotron radiationElectronLow energy photonAlanine; Electron paramagnetic resonance; Low energy photonsRadiation030218 nuclear medicine & medical imaginglaw.invention03 medical and health sciences0302 clinical medicinelaw030220 oncology & carcinogenesisDosimetryElectron paramagnetic resonanceAtomic physicsElectron paramagnetic resonanceInstrumentationNuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
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