Dosimetric studies of e-, γ-, n- Irradiation fields of the M-30 microtron (18.5 mev)

• Published in: Radiation physics and chemistry (Oxford, England : 1993) Vol. 223; p. 111964
• Main Authors: Maslyuk, V., Pop, O., Obryk, B., Svatiuk, N., Hainish, J., Rusyn, A., Romanyuk, M., Megela, I.
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.10.2024
• Subjects: 18.5 MeV; Dosimetry; n-radiation; Radiation indicators; Radiation therapy; Reliability; TSL; n-radiation; γ; e; 18.5 MeV; Radiation indicators; Radiation therapy; Dosimetry; TSL; Reliability
• ISSN: 0969-806X; 1879-0895
• DOI: 10.1016/j.radphyschem.2024.111964

The results of the implementation and study of the radiation characteristics of high-energy electron (e-), gamma (γ-), and neutron (n-) radiation fields of the M-30 microtron with a maximum energy of 18.5 MeV are presented. Dosimetric characteristics were studied using the method of thermally stimulated luminescence (TSL) and using samples TLD-100H (LiF: Mg,Cu,P) and TLD-500K (Al2O3:C). Three e-, γ-, and n-experiments were performed at the same M-30 electron flux; the dosimetric indicators Yγ,n;e = Dγ,n/De, where Dγ,n is the intensity of the dosimetric peaks of TSL after γ- or n-irradiation, and De is, respectively, e-irradiation. We discuss the relative stability of these dosimeters' Yγ,e parameters at gamma irradiations and the presence of a partial correlation of Yn,e values in neutron fields. The latter is associated with the peculiarity of radiation defect formation in the material of dosimeters when interacting with nuclear particles of different types. The research results confirm the general ideas about the physics of electron radiation conversion into beams of nuclear particles of different natures. The data obtained are important in developing methods for dosimetric support of radiation technologies that use beams of mixed high-energy nuclear radiation, particularly for radiation therapy. •Only e-, γ-, and n-radiation fields (18.5 MeV) were created on the M-30 microtron.•Standard TLD 100H (LiF: Mg,Cu,P) and TLD 500K (Al2O3:C) dosimeters were used.•New dosimetric indicators Yγ,n;e of e-, γ-, n-fields of irradiation were proposed.•Dosimetry of neutron fields with TLD 100H samples requires additional calibration.•The results are important for the tasks of modern radiation therapy.