title: Scintillation properties of the YVO4:Eu3+ compound in powder form: its application to dosimetry in radiation fields produced by pulsed mega-voltage photon beams.
abstract: The investigation of scintillation properties of europium doped yttrium orthovanadate shows the suitability of this material for fiber-based dose rate measurements. All measurements were carried out with a 6 MV Varian linear accelerator. The temperature dependence of the signal is lower than that of the plastic scintillators reported so far. By measuring the afterglow of probes between Linac-pulses, the signal due to the stem effect can be successfully eliminated. Comparison of depth dose profiles in a water phantom for radiation field dimensions between 1 x 1 cm(2) and 10 x 10 cm(2) shows that the probes are suitable for small fields having dimensions up to 1 x 1 cm(2). The high light yield of probes having dimensions of 1 mm opens up the possibility for their use in spatially confined radiation fields, such as in intensity-modulated radiotherapy (IMRT) and volume-modulated radiation therapy (VMAT).
authors.affiliation: Instituto de Física Arroyo Seco - CIFICEN (CONICET - UNCPBA), Pinto 399, 7000 Tandil, Argentina.
authors.forename: Nahuel
authors.initials: N
authors.lastname: Martinez
authors.affiliation: Dresden University of Technology, Institute of Nuclear and Particle Physics, Radiation Physics Group, D- 01062 Dresden, Germany.
authors.forename: Tobias
authors.initials: T
authors.lastname: Teichmann
authors.affiliation: Instituto de Física Arroyo Seco - CIFICEN (CONICET - UNCPBA), Pinto 399, 7000 Tandil, Argentina.
authors.forename: Pablo
authors.initials: P
authors.lastname: Molina
authors.affiliation: Dresden University of Technology, Institute of Nuclear and Particle Physics, Radiation Physics Group, D- 01062 Dresden, Germany.
authors.forename: Marian
authors.initials: M
authors.lastname: Sommer
authors.affiliation: Instituto de Física Arroyo Seco - CIFICEN (CONICET - UNCPBA), Pinto 399, 7000 Tandil, Argentina.
authors.forename: Martin
authors.initials: M
authors.lastname: Santiago
authors.affiliation: Dresden University of Technology, Institute of Nuclear and Particle Physics, Radiation Physics Group, D- 01062 Dresden, Germany.
authors.forename: Jürgen
authors.initials: J
authors.lastname: Henniger
authors.affiliation: Instituto de Física Arroyo Seco - CIFICEN (CONICET - UNCPBA), Pinto 399, 7000 Tandil, Argentina. Electronic address: ecaselli@exa.unicen.edu.ar.
authors.forename: Eduardo
authors.initials: E
authors.lastname: Caselli
mesh_terms: D004307:Dose-Response Relationship, Radiation; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005063:Europium / Q000737:chemistry / Q000528:radiation effects*; D005336:Fiber Optic Technology / Q000295:instrumentation* / Q000379:methods; D008422:Materials Testing; D010315:Particle Accelerators; D017785:Photons; D011208:Powders; D011829:Radiation Dosage; D020266:Radiotherapy, Conformal / Q000379:methods*; D012588:Scintillation Counting / Q000295:instrumentation* / Q000379:methods; D014638:Vanadates; D015019:Yttrium / Q000737:chemistry / Q000528:radiation effects*
chemical_list: D011208:Powders; D014638:Vanadates; D005063:Europium; D015019:Yttrium
keywords: Röntgentherapie; Scintillator detector; Szintillationdetektor; faserbasierte Dosisleistungsmessungen; fiber-based dose rate measurements; radiotherapy