title: CALIBRATION OF A WHOLE BODY COUNTER FOR 241Am WITH THE LLNL CHEST PHANTOM.
abstract: An occupational incorporation event occurred at the Radioactive Waste Treatment and Disposal Facility in December 2013 at Püspökszilágy, Hungary. Internal contamination due to (241)Am was discovered by a regular routine whole body counting measurement at the Centre for Energy Research, Hungarian Academy of Sciences. After that, a whole body counter was calibrated for an organ counting geometry. For preliminary calibration, a home-made MIX-D chest phantom was applied simulating uniform lung activity distribution by (241)Am point sources located in different positions within the lung volume of the phantom. In order to carry out a more precise calibration, a Lawrence Livermore National Laboratory (LLNL) chest phantom was provided by the International Atomic Energy Agency. For counting efficiency over the lungs, values of 0.46±0.19 and 0.55±0.07 cps kBq(-1) were obtained for the MIX-D and the LLNL phantom, respectively; thus, the results are in good agreement.
authors.affiliation: Centre for Energy Research, Hungarian Academy of Sciences, Konkoly Thege Miklós Street 29-33, H-1121 Budapest, Hungary tamas.pazmandi@energia.mta.hu.
authors.forename: T
authors.initials: T
authors.lastname: Pázmándi
authors.affiliation: Centre for Energy Research, Hungarian Academy of Sciences, Konkoly Thege Miklós Street 29-33, H-1121 Budapest, Hungary.
authors.forename: A
authors.initials: A
authors.lastname: Andrási
authors.affiliation: Centre for Energy Research, Hungarian Academy of Sciences, Konkoly Thege Miklós Street 29-33, H-1121 Budapest, Hungary.
authors.forename: I
authors.initials: I
authors.lastname: Fehér
authors.affiliation: Centre for Energy Research, Hungarian Academy of Sciences, Konkoly Thege Miklós Street 29-33, H-1121 Budapest, Hungary.
authors.forename: A
authors.initials: A
authors.lastname: Kocsonya
authors.affiliation: Centre for Energy Research, Hungarian Academy of Sciences, Konkoly Thege Miklós Street 29-33, H-1121 Budapest, Hungary.
authors.forename: A
authors.initials: A
authors.lastname: Pántya
authors.affiliation: Centre for Energy Research, Hungarian Academy of Sciences, Konkoly Thege Miklós Street 29-33, H-1121 Budapest, Hungary.
authors.forename: P
authors.initials: P
authors.lastname: Szántó
authors.affiliation: Centre for Energy Research, Hungarian Academy of Sciences, Konkoly Thege Miklós Street 29-33, H-1121 Budapest, Hungary.
authors.forename: P
authors.initials: P
authors.lastname: Zagyvai
mesh_terms: D000396:Air Pollutants, Radioactive / Q000032:analysis; D000576:Americium / Q000032:analysis*; D000886:Anthropometry; D002138:Calibration; D005857:Germanium; D006801:Humans; D006814:Hungary; D007753:Laboratories; D008168:Lung / Q000528:radiation effects*; D019047:Phantoms, Imaging; D011829:Radiation Dosage; D011834:Radiation Monitoring / Q000295:instrumentation* / Q000379:methods; D011835:Radiation Protection / Q000379:methods; D011886:Radon / Q000032:analysis; D035441:Thoracic Wall / Q000528:radiation effects; D013909:Thorax / Q000528:radiation effects*; D014915:Whole-Body Counting
chemical_list: D000396:Air Pollutants, Radioactive; D005857:Germanium; D011886:Radon; D000576:Americium