Features of Polytetrafluoroethylene Application in High-Dose Dosimetry of Accelerated Protons by the Method of Electron Paramagnetic Resonance
Source abstract
Abstract
Abstract EPR—a high-dose dosimetry method for use in monitoring radiation technologies has been tested for a proton beam with an energy of 18 MeV using a domestic brand of polytetrafluoroethylene as a radiation detector and an original EPR spectrometer. It has been shown that the dose range of the EPR signal is limited to 1.5 MGy, after which saturation occurs. Doses exceeding this value can be measured using additional signals in the EPR spectrum. It was found that irradiation of the detectors makes them gamma radioactive. The energy of the gamma radiation and the half-life of the source corresponded to the isotope 18F obtained in the nuclear reaction 18O(p,n)18F, which indicated the presence of oxygen in the material of detectors, which determines their paramagnetic properties.
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Research context
OpenAlex topics: Radiation Therapy and Dosimetry · Polymer Nanocomposite Synthesis and Irradiation · Advanced Radiotherapy Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (36)
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