title: Measurements of gamma dose and thermal neutron fluence in phantoms exposed to a BNCT epithermal beam with TLD-700.
abstract: Gamma dose and thermal neutron fluence in a phantom exposed to an epithermal neutron beam for boron neutron capture therapy (BNCT) can be measured by means of a single thermoluminescence dosemeter (TLD-700). The method exploits the shape of the glow curve (GC) and requires the gamma-calibration GC (to obtain gamma dose) and the thermal-neutron-calibration GC (to obtain neutron fluence). The method is applicable for BNCT dosimetry in case of epithermal neutron beams from a reactor because, in most irradiation configurations, thermal neutrons give a not negligible contribution to the TLD-700 GC. The thermal neutron calibration is not simple, because of the impossibility of having thermal neutron fields without gamma contamination, but a calibration method is here proposed, strictly bound to the method itself of dose separation.
authors.affiliation: Physics Department, Università degli Studi di Milano, via Celoria 16, Milano 20133, Italy INFN, Section of Milan, via Celoria 16, Milano 20133, Italy grazia.gambarini@mi.infn.it.
authors.forename: G
authors.initials: G
authors.lastname: Gambarini
authors.affiliation: Physics Department, Università degli Studi di Milano, via Celoria 16, Milano 20133, Italy.
authors.forename: D
authors.initials: D
authors.lastname: Magni
authors.affiliation: Physics Department, Università degli Studi di Milano, via Celoria 16, Milano 20133, Italy.
authors.forename: V
authors.initials: V
authors.lastname: Regazzoni
authors.affiliation: Medical Physics Unit, Fondazione IRCCS Istituto Nazionale Tumori, via Venezian 1, Milano 20133, Italy.
authors.forename: M
authors.initials: M
authors.lastname: Borroni
authors.affiliation: Medical Physics Unit, Fondazione IRCCS Istituto Nazionale Tumori, via Venezian 1, Milano 20133, Italy.
authors.forename: M
authors.initials: M
authors.lastname: Carrara
authors.affiliation: Medical Physics Unit, Fondazione IRCCS Istituto Nazionale Tumori, via Venezian 1, Milano 20133, Italy.
authors.forename: E
authors.initials: E
authors.lastname: Pignoli
authors.affiliation: Department of Neutron Physics, Research Centre Řež, Ltd., Řež, Czech Republic.
authors.forename: J
authors.initials: J
authors.lastname: Burian
authors.affiliation: Department of Neutron Physics, Research Centre Řež, Ltd., Řež, Czech Republic.
authors.forename: M
authors.initials: M
authors.lastname: Marek
authors.affiliation: Department of Neutron Physics, Research Centre Řež, Ltd., Řež, Czech Republic.
authors.forename: V
authors.initials: V
authors.lastname: Klupak
authors.affiliation: Department of Neutron Physics, Research Centre Řež, Ltd., Řež, Czech Republic.
authors.forename: L
authors.initials: L
authors.lastname: Viererbl
mesh_terms: D016754:Boron Neutron Capture Therapy / Q000379:methods*; D002138:Calibration; D005459:Fluorides; D005720:Gamma Rays; D006801:Humans; D018020:Lithium Compounds; D009369:Neoplasms / Q000532:radiotherapy*; D009502:Neutrons; D019047:Phantoms, Imaging; D017785:Photons; D011879:Radiotherapy Dosage; D011880:Radiotherapy Planning, Computer-Assisted; D015203:Reproducibility of Results; D013819:Thermoluminescent Dosimetry / Q000295:instrumentation* / Q000379:methods*
chemical_list: D018020:Lithium Compounds; C027651:lithium fluoride; D005459:Fluorides