School of Physics, Universiti Sains Malaysia, 11800, USM, Penang, Malaysia.
School of Health Sciences, Universiti Sains Malaysia, 16150, Kubang Kerian, Kelantan, Malaysia.
Radiat Environ Biophys. 2022 Aug;61(3):435-443. doi: 10.1007/s00411-022-00978-2. Epub 2022 Jul 1.
In this study, linear and mass attenuation coefficients of fabricated particleboards intended for use as phantom material were estimated using Cs and Co radiation sources. Particleboards made of Rhizophora spp. wood trunk bonded with soy flour and lignin were fabricated at a target density of 1.0 g cm, with and without gloss finish coating. Elemental composition of the particleboards was obtained by means of energy dispersive X-ray (EDX) spectroscopy. Experimental setups were simulated via the GATE Monte Carlo (MC) package, with particle histories of 1 × 10-1 × 10. Linear and mass attenuation coefficients obtained from measurements and GATE simulations were compared and discussed. The percentage differences between the measured and simulated linear and mass attenuation coefficients of the samples were reasonably small (2.05-4.88% for Cs and 3.24-5.38% for Co). It is shown that all the particleboards have the potential to be used as phantom materials as the attenuation coefficients measured were in good agreement with those of water (calculated with XCOM) and with those simulated with the GATE toolkit. The use of gloss finish coating also did not show any significant effect on the attenuation coefficient of the phantom material. Verification of experimental results via GATE simulations has been shown crucial in providing reliable data for energy transmission studies. Based on the results achieved in this study, it is concluded that the studied material-Rhizophora spp. wood trunk bonded with soy flour and lignin including gloss finish coating-can be used in radiation dosimetry studies.
在这项研究中，使用 Cs 和 Co 辐射源估计了拟用作体模材料的刨花板的线性和质量衰减系数。用豆粉和木质素粘结的 Rhizophora spp.树干制成的刨花板目标密度为 1.0 g cm，有和没有光泽面漆涂层。通过能谱仪（EDX）光谱法获得刨花板的元素组成。通过 GATE 蒙特卡罗（MC）包模拟实验装置，粒子历史为 1×10-1×10。将测量和 GATE 模拟得到的线性和质量衰减系数进行了比较和讨论。样品的测量和模拟线性和质量衰减系数之间的百分比差异较小（Cs 为 2.05-4.88%，Co 为 3.24-5.38%）。结果表明，所有刨花板都有可能用作体模材料，因为测量的衰减系数与水（用 XCOM 计算）的衰减系数以及 GATE 工具包模拟的衰减系数非常吻合。使用光泽面漆涂层对体模材料的衰减系数也没有显示出任何显著影响。通过 GATE 模拟验证实验结果对于能量传输研究提供可靠数据至关重要。基于本研究的结果，可以得出结论，研究材料-Rhizophora spp.树干用豆粉和木质素粘结，包括光泽面漆涂层-可用于辐射剂量学研究。
