title: Assessment of natural radiation exposure levels and mass attenuation coefficients of lime and gypsum samples used in Turkey.
abstract: The activity concentrations of 226Ra, 232Th, and 40K in lime and gypsum samples used as building materials in Turkey were measured using gamma spectrometry. The mean activity concentrations of 226Ra, 232Th, and 40K were found to be 38±16, 20±9, and 156±54 Bq kg(-1) for lime and found to be 17±6, 13±5, and 429±24 Bq kg(-1) for gypsum, respectively. The radiological hazards due to the natural radioactivity in the samples were inferred from calculations of radium equivalent activities (Raeq), indoor absorbed dose rate in the air, the annual effective dose, and gamma and alpha indices. These radiological parameters were evaluated and compared with the internationally recommended limits. The experimental mass attenuation coefficients (μ/ρ) of the samples were determined in the energy range 81-1,332 keV. The experimental mass attenuation coefficients were compared with theoretical values obtained using XCOM. It is found that the calculated values and the experimental results are in good agreement.
authors.affiliation: Department of Physics, Batman University, 72060, Batman, Turkey. ndamla@ktu.edu.tr
authors.forename: Nevzat
authors.initials: N
authors.lastname: Damla
authors.forename: Uğur
authors.initials: U
authors.lastname: Cevik
authors.forename: Ali Ihsan
authors.initials: AI
authors.lastname: Kobya
authors.forename: Ahmet
authors.initials: A
authors.lastname: Celik
authors.forename: Necati
authors.initials: N
authors.lastname: Celik
mesh_terms: D017610:Calcium Compounds / Q000737:chemistry*; D002133:Calcium Sulfate / Q000737:chemistry*; D003252:Construction Materials / Q000032:analysis; D004781:Environmental Exposure / Q000032:analysis; D010087:Oxides / Q000737:chemistry*; D011188:Potassium / Q000032:analysis*; D011834:Radiation Monitoring; D011851:Radioactivity; D011883:Radium / Q000032:analysis*; D013910:Thorium / Q000032:analysis*; D014421:Turkey
chemical_list: D017610:Calcium Compounds; D010087:Oxides; D013910:Thorium; C016538:lime; D011188:Potassium; D011883:Radium; D002133:Calcium Sulfate