Spectra Transmitted by Mortar Barite in x-ray Qualities Applied in Diagnostic Radiology as Shielding

8th Brazilian Congress on Metrology

Almeida, A.T.^1,2 ; Araújo, F.G.S.^2 ; Nogueira, M.S.^3 ; Santos, M.A.P.^4

Brazilian Institute for Safety and Health at Work - FUNDACENTRO, Minas Gerais, Brazil^1

Federal University of OuroPreto - UFOP / REDEMAT, Minas Gerais, Brazil^2

Center of Development of Nuclear Technology - CDTN / CNEN, Minas Gerais, Brazil^3

Regional Center for Nuclear Science - CRCN / CNEN, Pernambuco, Brazil^4

关键词: Diagnostic radiology;    Energy ranges;    In-buildings;    Mean energy;    Rectangular plates;    Spectrometry systems;    Transmitted spectra;    X-ray quality;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/733/1/012096/pdf
DOI  :  10.1088/1742-6596/733/1/012096

来源: IOP

【 摘 要 】

Concrete which contains water, cement and aggregate, is widely used in building construction such as medical hospitals. The CdZnTe spectrometry system was used to acquire the transmitted spectra in the RQR qualities and the stripping procedure was performed by taking into account both the contributions of efficiency and x-ray escape fraction, experimentally determined. The samples were prepared in rectangular plate format with dimensions of (5 x 5) cm with thicknesses varying from 0.2cm to 2cm and exposed to x-ray beams generated. The HVL and the mean energy in this energy range was determined.