title: Effects of micro-sized and nano-sized WO3on mass attenauation coefficients of concrete by using MCNPX code.
abstract: In the present work the effect of tungsten oxide (WO3) nanoparticles on mass attenauation coefficients of concrete has been investigated by using MCNPX (version 2.4.0). The validation of generated MCNPX simulation geometry has been provided by comparing the results with standard XCOM data for mass attenuation coefficients of concrete. A very good agreement between XCOM and MCNPX have been obtained. The validated geometry has been used for definition of nano-WO3and micro-WO3into concrete sample. The mass attenuation coefficients of pure concrete and WO3added concrete with micro-sized and nano-sized have been compared. It was observed that shielding properties of concrete doped with WO3increased. The results of mass attenauation coefficients also showed that the concrete doped with nano-WO3significanlty improve shielding properties than micro-WO3. It can be concluded that addition of nano-sized particles can be considered as another mechanism to reduce radiation dose.
authors.affiliation: Uskudar University, Vocational School of Health Services, Radiotherapy Department, İstanbul 34672, Turkey. Electronic address: huseyinozan.tekin@uskudar.edu.tr.
authors.forename: H O
authors.initials: HO
authors.lastname: Tekin
authors.affiliation: Department of Physics, Karnatak University, Dharwad, 580 003, India.
authors.forename: V P
authors.initials: VP
authors.lastname: Singh
authors.affiliation: Uskudar University, Medical Radiation Research Center (USMERA), Istanbul 34672, Turkey.
authors.forename: T
authors.initials: T
authors.lastname: Manici
keywords: Concrete; MCNPX; Nanoparticles; Radiation protection; Shielding