title: Monte Carlo based calibration of an air monitoring system for gamma and beta+ radiation.
abstract: Marinelli beaker systems are used to monitor the activity of radioactive samples. These systems are usually calibrated with water solutions and the determination of the activity in gases requires correction coefficients accounting for the different mass-thickness of the sample. For beta+ radionuclides the different distribution of the positrons annihilation points should be also considered. In this work a Monte Carlo simulation based on Geant4 is used to compute correction coefficients for the measurement of the activity of air samples.
authors.affiliation: Medical Physics Department, IRCCS Istituto Scientifico Romagnolo per lo Studio e la Cura dei tumori, 47014 Meldola, Italy. Electronic address: anna.sarnelli@irst.emr.it.
authors.forename: A
authors.initials: A
authors.lastname: Sarnelli
authors.affiliation: Istituto Nazionale di Fisica Nucleare, Sezione di Bologna, 40126 Bologna, Italy.
authors.forename: M
authors.initials: M
authors.lastname: Negrini
authors.affiliation: Medical Physics Department, IRCCS Istituto Scientifico Romagnolo per lo Studio e la Cura dei tumori, 47014 Meldola, Italy.
authors.forename: V
authors.initials: V
authors.lastname: D'Errico
authors.affiliation: Medical Physics Department, IRCCS Istituto Scientifico Romagnolo per lo Studio e la Cura dei tumori, 47014 Meldola, Italy.
authors.forename: D
authors.initials: D
authors.lastname: Bianchini
authors.affiliation: Laboratory of Medical Physics and Expert Systems, National Cancer Institute Regina Elena, 00144 Rome, Italy.
authors.forename: L
authors.initials: L
authors.lastname: Strigari
authors.affiliation: Medical Physics Department, IRCCS Istituto Scientifico Romagnolo per lo Studio e la Cura dei tumori, 47014 Meldola, Italy.
authors.forename: E
authors.initials: E
authors.lastname: Mezzenga
authors.affiliation: Medical Physics Department, IRCCS Istituto Scientifico Romagnolo per lo Studio e la Cura dei tumori, 47014 Meldola, Italy.
authors.forename: E
authors.initials: E
authors.lastname: Menghi
authors.affiliation: Medical Physics Department, IRCCS Istituto Scientifico Romagnolo per lo Studio e la Cura dei tumori, 47014 Meldola, Italy.
authors.forename: F
authors.initials: F
authors.lastname: Marcocci
authors.affiliation: Medical Physics Department, IRCCS Istituto Scientifico Romagnolo per lo Studio e la Cura dei tumori, 47014 Meldola, Italy.
authors.forename: M
authors.initials: M
authors.lastname: Benassi
mesh_terms: D000396:Air Pollutants, Radioactive / Q000032:analysis*; D001610:Beta Particles; D002138:Calibration; D004583:Electrons; D005462:Fluorine Radioisotopes / Q000032:analysis; D005720:Gamma Rays; D006801:Humans; D009010:Monte Carlo Method; D011834:Radiation Monitoring / Q000379:methods* / Q000706:statistics & numerical data; D013667:Technetium / Q000032:analysis
chemical_list: D000396:Air Pollutants, Radioactive; D005462:Fluorine Radioisotopes; D013667:Technetium
keywords: Air monitoring system; Correction for both gamma and beta+ emitters; GEANT4 simulation; Marinelli beaker