NUCLEAR TECHNIQUES, Volume. 46, Issue 6, 060504(2023)
Influence of wall effect on detection efficiency of β-emitters in TDCR-Čerenkov method
Figures & Tables(7)
Fig. 2. TDCR counting system (a) Physical object diagram, (b) System diagram
Fig. 3. Deposition spectra of β emitters in hydrochloric acid (a) 700 keV, (b) 2 800 keV
Fig. 4. Deposition spectra of β emitters of the wall of counting vial (a) 700 keV, (b) 2 800 keV
Table 1. Comparison of results
View tableView in ArticleTable 1. Comparison of results
核素
Nuclide
比活度 Specific activity / Bq·g-1 TDCR-切伦科夫（无壁效应）
TDCR-Čerenkov (without wall effect)
TDCR-切伦科夫（有壁效应）
TDCR-Čerenkov (with wall effect)
TDCR-LS 90Y 25.60(10)×103 25.44(10)×103 25.44(12)×103 32P 24.99(16)×104 24.79(16)×104 24.83(5)×104 204Tl 1.03(2)×105 1.03(2)×105 1.04(1)×105
Table 2. Evaluation of the combined uncertainties for method including wall effect (%)
View tableView in ArticleTable 2. Evaluation of the combined uncertainties for method including wall effect (%)
分量 Component TDCR-切伦科夫 TDCR-Čerenkov TDCR-LS 90Y 32P 204Tl 90Y 32P 204Tl 测量变异性 Measurement variability 0.10 0.06 0.65 0.48 0.10 0.36 死时间 Dead-time 0.03 0.03 0.01 0.02 0.02 0.01 符合分辨时间 Resolving-time 0.04 0.05 0.16 0.03 0.03 0.04 半衰期修正 Decay correction 0.05 0.03 <0.01 0.05 0.03 <0.01 本底 Background 0.06 0.06 0.06 0.04 0.04 0.04 称重 Mass 0.06 0.17 0.13 0.05 0.17 0.25 β谱 β spectrum 0.01 0.01 0.02 <0.01 <0.01 <0.01 各向异性系数 Anisotropy coefficient 0.36 0.56 1.4 ― ― ― kB值 kB value ― ― ― 0.02 0.01 0.04 合成 Combined 0.39 0.60 1.6 0.49 0.21 0.44
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Zihao FAN, Juncheng LIANG, Haoran LIU, Daqing YUAN, Yang XIAO, Changhao SUN, Zhijie YANG, Meiling LIU. Influence of wall effect on detection efficiency of β-emitters in TDCR-Čerenkov method[J]. NUCLEAR TECHNIQUES, 2023, 46(6): 060504
Paper Information
Category: Research Articles
Received: Dec. 29, 2022
Accepted: --
Published Online: Jul. 5, 2023
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