title: Monte Carlo simulation of x-ray buildup factors of lead and its applications in shielding of diagnostic x-ray facilities.
abstract: X-ray buildup factors of lead in broad beam geometry for energies from 15 to 150 keV are determined using the general purpose Monte Carlo N-particle radiation transport computer code (MCNP4C). The obtained buildup factors data are fitted to a modified three parameter Archer et al. model for ease in calculating the broad beam transmission with computer at any tube potentials/ filters combinations in diagnostic energies range. An example for their use to compute the broad beam transmission at 70, 100, 120, and 140 kVp is given. The calculated broad beam transmission is compared to data derived from literature, presenting good agreement. Therefore, the combination of the buildup factors data as determined and a mathematical model to generate x-ray spectra provide a computationally based solution to broad beam transmission for lead barriers in shielding x-ray facilities.
authors.affiliation: Ecole Supérieure des Sciences et Techniques de la Santé de Monastir, Avenue Avicenne 5000 Monastir, Tunisia. hedi_kharrati@yahoo.fr
authors.forename: Hedi
authors.initials: H
authors.lastname: Kharrati
authors.forename: Amel
authors.initials: A
authors.lastname: Agrebi
authors.forename: Mohamed-Karim
authors.initials: MK
authors.lastname: Karaoui
mesh_terms: D003198:Computer Simulation; D003252:Construction Materials; D007854:Lead / Q000737:chemistry* / Q000528:radiation effects; D008422:Materials Testing; D008956:Models, Chemical; D015233:Models, Statistical; D009010:Monte Carlo Method; D011829:Radiation Dosage; D011835:Radiation Protection / Q000295:instrumentation* / Q000379:methods*; D011872:Radiology Department, Hospital; D011874:Radiometry / Q000379:methods*; D012542:Scattering, Radiation; D014965:X-Rays
chemical_list: D007854:Lead