Počet záznamů: 1
Relative efficiency of radiophotoluminescent glass dosimeters in a scanning pencil proton beam
- 1.
SYSNO ASEP 0581046 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Relative efficiency of radiophotoluminescent glass dosimeters in a scanning pencil proton beam Tvůrce(i) Majer, M. (HR)
Pasaricek, L. (HR)
Brkic, H. (HR)
Davídková, Marie (UJF-V) RID, ORCID, SAI
Navrátil, M. (CZ)
Vondráček, V. (CZ)
Kneževic, Z. (HR)Celkový počet autorů 7 Číslo článku 111396 Zdroj.dok. Radiation Physics and Chemistry. - : Elsevier - ISSN 0969-806X
Roč. 216, MAR (2024)Poč.str. 9 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova Dose response ; Relative efficiency ; RPL glass dosimeter ; TLD-100 ; Proton therapy Obor OECD Radiology, nuclear medicine and medical imaging Způsob publikování Omezený přístup Institucionální podpora UJF-V - RVO:61389005 UT WOS 001132601400001 EID SCOPUS 85178160954 DOI 10.1016/j.radphyschem.2023.111396 Anotace The increasing role of hadron therapy, and particularly of proton therapy, in cancer treatment requires dosimetric characterization of luminescent detectors in heavy charged particle beams. The ionization density, which is related to the linear energy transfer (LET), is changing when heavy charged particle is penetrating through a material. Therefore, it is crucial to evaluate how efficiency of the used dosimeters depends on the change in LET.The aim of this study was to evaluate relative efficiency of radiophotoluminescent (RPL) glass dosimeters (type GD-352M) in a clinical scanning pencil proton beam of 100 MeV and compare it to the results obtained with thermoluminescent (TL) dosimeters (type TLD-100). LETf and LETd at the selected dosimeter's position were evaluated and compared by two Monte Carlo codes (MCNP and PHITS). Linear dose response is precondition for the evaluation of dosimeter efficiency and first, dose response in proton beam was evaluated and compared with those in 60Co gamma ray field.Linear dose response up to 9 Gy was confirmed for RPLs in proton beam, and gamma ray field. For TLDs, supralinearity from about 5 Gy was observed. A constant relative efficiency is observed along the plateau (corresponding to LETf from 0.7 keV/mu m to 1.7 keV/mu m) of non-modulated proton beam with an average value 1.00 +/- 0.02 for RPL and 0.97 +/- 0.02 for TL dosimeters. Relative efficiency decrease of 10 % is observed for RPLs within the Bragg peak with LETf = 2.3 keV/mu m. Future work will be focused on the evaluation of the efficiency for higher LET values using more energetic proton beams and precise positioning along the Bragg peak. Pracoviště Ústav jaderné fyziky Kontakt Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Rok sběru 2025 Elektronická adresa https://doi.org/10.1016/j.radphyschem.2023.111396
Počet záznamů: 1