Effective Atomic Number Measurement of Energetic Material Using Photon Counting Spectral Computed Tomography

Ya-fei YANG; Cai-xin ZHANG; Hua CHEN; Wei-bin ZHANG; Yong TIAN; Ding-hua ZHANG; Kui-dong HUANG

doi:10.3964/j.issn.1000-0593(2022)05-1400-07

Journals >Spectroscopy and Spectral Analysis >Volume 42 >Issue 5 >Page 1400 > Article

Spectroscopy and Spectral Analysis
Vol. 42, Issue 5, 1400 (2022)

Effective Atomic Number Measurement of Energetic Material Using Photon Counting Spectral Computed Tomography

Ya-fei YANG^1、*, Cai-xin ZHANG^{1、1; *;}, Hua CHEN^1、1;, Wei-bin ZHANG^1、1;, Yong TIAN^1、1;, Ding-hua ZHANG^{2、2; 3;}, and Kui-dong HUANG^{2、2; 3; *;}

Author Affiliations

¹1. Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang 621999, China

²2. Key Laboratory of High Performance Manufacturing for Aero Engine, Northwestern Polytechnical University, Xi'an 710072, China

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DOI: 10.3964/j.issn.1000-0593(2022)05-1400-07 Cite this Article

Ya-fei YANG, Cai-xin ZHANG, Hua CHEN, Wei-bin ZHANG, Yong TIAN, Ding-hua ZHANG, Kui-dong HUANG. Effective Atomic Number Measurement of Energetic Material Using Photon Counting Spectral Computed Tomography[J]. Spectroscopy and Spectral Analysis, 2022, 42(5): 1400 Copy Citation Text

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Fig. 1. Measurement results of the first experiment

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Fig. 2. Measurement results of the second experiment

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标定物	化学式	等效原子序数	低能区衰减/cm^-1	高能区衰减/cm^-1	衰减比值R
尼龙6	—[NH—(CH₂)₅—CO]_n—	6.600 8	0.185 4±0.002 8	0.169 9±0.002 9	1.091 2±0.004 0
聚四氟乙烯	—[CF₂—CF₂]_n—	8.616 3	0.364 9±0.002 9	0.312 3±0.002 8	1.168 4±0.007 1
铝	Al	13	0.796 9±0.004 0	0.536 5±000 28	1.485 4±0.001 9

Table 1. Chemical formulas, equivalent atomic numbers and linear attenuation coefficient ratios of calibration materials in the first experiment

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零件材料	低能区衰减/cm^-1	高能区衰减/cm^-1	衰减比值	标定的等效原子序数	相对误差/%
钛	2.553 5±0.033 8	1.369 0±0.017 2	1.865 2±0.001 9	16.323 2±0.014 4	25.803 6
有机玻璃	0.192 8±0.002 0	0.175 4±0.001 8	1.099 2±0.004 1	6.894 0±0.128 2	0.691 4
未知材料	0.244 9±0.002 9	0.213 8±0.002 3	1.145 5±0.002 0	8.132 1±0.045 9	-

Table 2. The measured linear attenuation ratios, equivalent atomic numbers and relative errors for materials

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零件组成	低能区衰减/cm^-1	高能区衰减/cm^-1	衰减比值	测量的等效原子序数	相对误差/%
铝	0.789 8±0.004 7	0.528 8±0.003 6	1.494±0.002 7	13.093 5±0.027 2	0.719 2
聚四氟乙烯	0.365 8±0.003 5	0.314 2±0.004 2	1.164 2±0.006 6	8.544 0±0.136 9	0.839 1
22中的主体	0.298 7±0.006 2	0.261 32±0.004 8	1.142 8±0.004 9	8.068 1±0.115 7	-
22中的杂质	0.955 8±0.289 0	0.534 0±0.124 2	1.789 4+0.181 4	15.733 2±1.589 2	-
22F	0.297 7±0.001 5	0.263 5±0.001 8	1.129 8±0.004 0	7.753 5±0.102 7	-
F2314	0.412 0±0.003 1	0.308 7±0.003 0	1.334 6±0.008 7	11.281 1±0.112 1	-
22F+F2314中的22F	0.306 9±0.002 4	0.272 5±0.002 2	1.126 2±0.004 0	7.660 5±0.105 0	1.119 9
22F+F2314中的F2314	0.443 1±0.002 3	0.330 1±0.001 7	1.342 3±0.001 7	11.379 4±0.021 41	0.871 4

Table 3. The measured linear attenuation ratios, equivalent atomic numbers and relative errors for materials

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