External Bremsstrahlung Studies on Films of Lead Monoxide Filled Polycarbonate Composite

IF 0.6 Q4 NUCLEAR SCIENCE & TECHNOLOGY

Atom Indonesia Pub Date : 2023-08-29 DOI:10.55981/aij.2023.1304

V. A. Kandagal, B. Lobo

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引用次数: 0

Abstract

The development of high-Z (high atomic number) radiation shielding materials is vital in order to protect personnel who work with harmful gamma radiation sources. At the same time, the emission of external bremsstrahlung (EB) radiation in those shielding materials when the radiation source emits beta particles as well as gamma radiation is also of prime concern.The production of EB in films of lead monoxide (PbO) loaded polycarbonate (PC) composite at eleven different filler levels (FLs) varying, in terms of weight fraction, from 0.0 % up to 10.0 % were investigated experimentally by using beta particles from strontium-90/yttrium-90 (90Sr/90Y) radioactive source. A nonlinear relation is observed between EB intensity and target thickness. The effective atomic numbers of the prepared PbO-filled PC composite films (at different FLs) were determined via EB measurements, followed by calculations, and the values obtained were compared with the modified atomic numbers which were determined for the same composite films (at different FLs) using the Markowicz and Van Grieken equation, and it was found that they are in good agreement. Finally, the atomic number dependence of EB in these composite films (PbO-filled PC composites) has been studied. It is obtained that the intensity of EB spectra depends on the square of the atomic number of the target material.

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一氧化铅填充聚碳酸酯复合材料薄膜的外轫致辐射研究

开发高Z（高原子序数）辐射屏蔽材料对于保护使用有害伽马辐射源的人员至关重要。与此同时，当辐射源发射β粒子和γ辐射时，这些屏蔽材料中外部韧致辐射的发射也是主要关注的问题。通过使用锶-90/钇-90（90Sr/90Y）放射源的β粒子，实验研究了在11种不同填料水平（FL）（重量分数从0.0%到10.0%）下，负载一氧化铅（PbO）的聚碳酸酯（PC）复合材料薄膜中EB的产生。观察到EB强度和靶厚度之间存在非线性关系。通过EB测量，然后进行计算，确定了制备的PbO填充PC复合膜（在不同FL下）的有效原子序数，并将所获得的值与使用Markowicz和Van Grieken方程确定的相同复合膜（不同FL）的修正原子序数进行了比较，发现它们非常一致。最后，研究了EB在这些复合膜（PbO填充PC复合材料）中的原子序数依赖性。结果表明，电子束光谱的强度取决于靶材料原子序数的平方。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Atom Indonesia NUCLEAR SCIENCE & TECHNOLOGY-

CiteScore

1.00

自引率

0.00%

发文量

审稿时长

16 weeks

期刊介绍： The focus of Atom Indonesia is research and development in nuclear science and technology. The scope of this journal covers experimental and analytical research in nuclear science and technology. The topics include nuclear physics, reactor physics, radioactive waste, fuel element, radioisotopes, radiopharmacy, radiation, and neutron scattering, as well as their utilization in agriculture, industry, health, environment, energy, material science and technology, and related fields.