DOSIMETRIC STUDIES OF HIGH-ENERGY (18.5 MeV) e-, gamma-, n-RADIATION FIELDS: MICROTRON M-30 EXPERIMENT
Résumé
High-energy electrons, gamma, and photo neutrons radiation are widely used for therapeutic and technological applications, but there are limited systematics studies of their dosimetric characteristics. This paper presents the experimental results of thermoluminescent (TL) method studies of such radiation fields with a maximum energy of 18.5 MeV. The radiation experiment was carried out on the M-30 microtron electron accelerator with a unique mono energy (0.15%) electron beam. Three e- ,-, n-studies were held at the same electron fluence the M-30; the values of the dosimetric parameters of the studied materials Y ,n;e = D ,n/De, where D ,n is the value of the intensity of the TL peaks of the dosimeters after the bremsstrahlung (g) gamma-or photoneutron (n) irradiation, and De-respectively, same after the electron (e) beam was obtained. The results confirmed the general ideas about the physics of the transformation of electron radiation into beams of nuclear particles of various natures; however, the effectiveness of using doped LiF and Al2O3 materials for dosimetry of neutron fields requires additional studies. The results are essential for radiation technologies using beams of mixed nuclear radiation, especially for radiation therapy.
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