NUCLEAR TECHNIQUES, Volume. 48, Issue 6, 060005(2025)
An unfolding method for bonner sphere spectrometer measurement independent of prior information
Figures & Tables(7)
Fig. 1. Diagram of integrated multi-sphere neutron spectrometer (a) and its response function (b) (color online)
Fig. 3. Spectral unfolding results of the GRAVEL method (a), ML-EM method (b) and the iterative regularization method (c)
Fig. 4. Convolutional and measured values of detector counts (a) and its relative deviation (b)
Fig. 5. Comparison of errors among three spectral unfolding methods (a) Calculation error, (b) Relative deviation from the true value
Table 1. Moderator thickness and detector counts
View tableView in ArticleTable 1. Moderator thickness and detector counts
厚度
Thickness / cm
0 1.05 1.85 2.9 3.95 5 5.8 6.65 计数
Counting
48 91 355 423 978 1 098 1 590 1 500 厚度
Thickness / cm
7.7 8.75 9.8 10.6 11.65 — — — 计数
Counting
1 573 1 925 1 798 1 943 1 787 — — —
Table 2. Estimation of the accuracy of deconvolution results
View tableView in ArticleTable 2. Estimation of the accuracy of deconvolution results
解谱方法
Unfolding method
GRAVEL ML-EM 迭代正则化方法
The iterative regularization method
RelE / % 103 107 16
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Songqian TANG, Yi TAN, Junyun YANG, Bin LIU, Shuo LI, Liangming PAN. An unfolding method for bonner sphere spectrometer measurement independent of prior information[J]. NUCLEAR TECHNIQUES, 2025, 48(6): 060005
Paper Information
Category: Special Topics of Academic Papers at The 27th Annual Meeting of the China Association for Science and Technology
Received: May. 11, 2024
Accepted: --
Published Online: Jul. 25, 2025
The Author Email: Bin LIU (刘斌)
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