NUCLEAR TECHNIQUES, Volume. 47, Issue 1, 010201(2024)
X-ray lead equivalent measurement of lead-free/lead-composite nuclear radiation protection materials
Figures & Tables(9)
Fig. 1. Shielding mechanism of different shielding materials for ionizing radiation
Fig. 2. Mass attenuation coefficient of several simple substance materials (color online)
Fig. 3. Schematic of lead equivalent measurement method for narrow beam
Fig. 6. Relationship between standard lead sheet thickness and attenuation rate at 160 kV
Table 1. Establishment of X-ray reference radiation quality
View tableView in ArticleTable 1. Establishment of X-ray reference radiation quality
管电压
Tube potential
/ kV
附加过滤 Additional filtration / mm 半值层 Half value layer / mm Cu 有效能量
Effective energy/ keV
Qi Sn Cu Al 测量
Measurement
计算
Calculation
偏差
Deviation / %
80 2.0 4.0 0.59 0.59 0.0 65.8 0.82 100 5.0 4.0 1.14 1.13 0.9 83.6 0.84 120 1.0 4.9 4.0 1.74 1.73 0.6 101 0.84 160 3.0 2.5 4.0 2.80 2.79 0.4 130 0.81
Table 2. Measurement results of lead equivalent of different types of nuclear radiation protective clothing materials
View tableView in ArticleTable 2. Measurement results of lead equivalent of different types of nuclear radiation protective clothing materials
部位
Protective area
材料型号
Material model
屏蔽效率
Shielding efficiency / %
铅当量
Lead equivalent / mm Pb
非重点部位
Non-critical areas
1 33.4 0.136 2 45.3 0.208 3 47.9 0.226 4 52.4 0.259 5 55.8 0.287 重点部位
Critical areas
6 74.6 0.489 7 82.2 0.619
Table 3. Uncertainty analysis of lead equivalent measurement results
View tableView in ArticleTable 3. Uncertainty analysis of lead equivalent measurement results
源项
Source items
A类不确定度
Uncertainty of type A / %
B类不确定度
Uncertainty of type B / %
标准铅片的厚度测量 Thickness measurement of standard lead sheet 1.5 — 拟合方程 Fitting equation — 0.23 电离室能量响应 Ionization chamber energy response — 1.1 测试材料的测量 Measurement of test materials 0.5 0.5 扩展不确定度 Expended uncertainty 4.2% (k=2)
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Rui ZHAO, Jinjie WU, Bo LIU, Xianqiang TANG, Bin GUO, Yazhu LYU, Lu HAN. X-ray lead equivalent measurement of lead-free/lead-composite nuclear radiation protection materials[J]. NUCLEAR TECHNIQUES, 2024, 47(1): 010201
Paper Information
Category: Research Articles
Received: Apr. 29, 2023
Accepted: --
Published Online: Mar. 7, 2024
The Author Email: Jinjie WU (吴金杰)
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