title: Application of a semi-empirical model for the evaluation of transmission properties of barite mortar.
abstract: The aim of this study was to estimate barite mortar attenuation curves using X-ray spectra weighted by a workload distribution. A semi-empirical model was used for the evaluation of transmission properties of this material. Since ambient dose equivalent, H(⁎)(10), is the radiation quantity adopted by IAEA for dose assessment, the variation of the H(⁎)(10) as a function of barite mortar thickness was calculated using primary experimental spectra. A CdTe detector was used for the measurement of these spectra. The resulting spectra were adopted for estimating the optimized thickness of protective barrier needed for shielding an area in an X-ray imaging facility.
authors.affiliation: Instituto de Física da Universidade de São Paulo, Cidade Universitária, Rua do Matão Travessa R .187, CEP 05508-090 São Paulo, Brazil. Electronic address: josilene@usp.br.
authors.forename: Josilene C
authors.initials: JC
authors.lastname: Santos
authors.affiliation: Instituto de Física Gleb Wataghin, Universidade de Campinas, Cidade Universitária Zeferino Vaz Barão Geraldo, Rua Sérgio Buarque de Holanda, 777, CEP 13083-859 Campinas, SP, Brazil. Electronic address: atomal@ifi.unicamp.br.
authors.forename: Alessandra
authors.initials: A
authors.lastname: Tomal
authors.affiliation: Instituto de Física da Universidade de São Paulo, Cidade Universitária, Rua do Matão Travessa R .187, CEP 05508-090 São Paulo, Brazil. Electronic address: lean.mariano@gmail.com.
authors.forename: Leandro
authors.initials: L
authors.lastname: Mariano
authors.affiliation: Instituto de Física da Universidade de São Paulo, Cidade Universitária, Rua do Matão Travessa R .187, CEP 05508-090 São Paulo, Brazil. Electronic address: pcosta@if.usp.br.
authors.forename: Paulo R
authors.initials: PR
authors.lastname: Costa
keywords: Shielding barriers; Solid state detector; X-ray Spectrometry