Ludlum configuration for the measurement of mass attenuation coefficients at high energy photons by using Compton scattering method

International Nuclear Science, Technology and Engineering Conference 2018

Mohd Yusof, M.F.^1 ; Mohd Isa, N.^2 ; Abd Kadir, A.B.^2 ; Salleh, H.^2

School of Health Sciences, Universiti Sains Malaysia, Kelantan

16150, Malaysia^1

Medical Physics and Secondary Standard Dosimetry Laboratory, Malaysian Nuclear Agency, Selangor

43000, Malaysia^2

关键词: Calculated values;    Compton scattering technique;    Gamma energy;    High energy photons;    Mass attenuation coefficients;    Measurements of;    Solid water;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/555/1/012028/pdf
DOI  :  10.1088/1757-899X/555/1/012028

来源: IOP

【 摘 要 】

The measurements of mass attenuation coefficients by using Compton scattering technique was carried out by using the Ludlum configuration. A 137Cs sealed sourced was used and attenuated at angles between 30 and 75 to provide scattered gamma energies between 337.72 and 564.09 keV. The mass attenuation coefficients of solid water and perspex were measured and compared to the calculated value of water by using XCOM. The results showed that the measured mass attenuation coefficients of solid water and Perspex® phantoms were in agreement to the values of water within 6.84 and 7.20% average percentage of discrepancies. The results indicated the suitability of the Ludlum configuration for the measurement of mass attenuation coefficients by using the Compton scattering method.