title: Characterization of a Fricke dosimeter at high energy photon and electron beams used in radiotherapy.
abstract: The dosimetric features of the Fricke dosimeter in clinical linear accelerator beams are considered. Experimental data were obtained using various nominal energies 6 and 18 MV, 12 and 15 MeV, including the (60)Co γ-ray beam. The calibration of the dosimeters was performed using the ionization chamber as a reference dosimeter. Some general characteristics of Fricke dosimeter such as energy dependence, optical density (OD)-dose relationship, reproducibility, accuracy, dose rate dependence were analyzed. The Fricke solution shows linearity in OD-dose relationship, energy independence and a good reproducibility over the energy range investigated. The Fricke dosimeter was found to be suitable for carrying out absorbed dose to water measurements in the calibration of high energy electron and photon beams.
authors.affiliation: Département de Physique Médicale, Centre de Recherche Nucléaire d'Alger, 2 Boulevard Frantz Fanon, BP 399 Alger-Gare, Algeria. o.moussous@crna.dz
authors.forename: O
authors.initials: O
authors.lastname: Moussous
authors.forename: S
authors.initials: S
authors.lastname: Khoudri
authors.forename: M
authors.initials: M
authors.lastname: Benguerba
mesh_terms: D002138:Calibration; D004307:Dose-Response Relationship, Radiation; D004583:Electrons; D005296:Ferrous Compounds; D019047:Phantoms, Imaging; D011874:Radiometry / Q000295:instrumentation*; D011882:Radiotherapy, High-Energy / Q000295:instrumentation* / Q000379:methods; D015203:Reproducibility of Results; D012996:Solutions
chemical_list: D005296:Ferrous Compounds; C075364:Fricke solution; D012996:Solutions