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Acta Optica Sinica, Volume. 44, Issue 4, 0412003(2024)

Estimation of Equivalent Atomic Number and Density for Bronze Vessels Based on Spectral Computed Tomography

Siyu Li, Xinrui Zhang, Ailong Cai, Shaoyu Wang, Lei Li, and Bin Yan*
Author Affiliations
  • Henan Key Laboratory of Imaging and Intelligent Processing, College of Information Systems Engineering, Information Engineering University, Zhengzhou 450001, Henan, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (7)
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    References (14)
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    Figures & Tables(7)
    Simulated material body model and reconstructed image results. (a) Simulated material body model; (b) low-energy reconstructed image; (c) high-energy reconstructed image

    Fig. 1. Simulated material body model and reconstructed image results. (a) Simulated material body model; (b) low-energy reconstructed image; (c) high-energy reconstructed image

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    Imaging results for eight materials (serial number 1 from left)

    Fig. 2. Imaging results for eight materials (serial number 1 from left)

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    Variation of attenuation coefficients with acquisition energy for eight materials

    Fig. 3. Variation of attenuation coefficients with acquisition energy for eight materials

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    • Table 1. Simulated experimental materials and parameters

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      Table 1. Simulated experimental materials and parameters

      No.MaterialChemical symbolρ /（g·cm-3）Z
      1TitaniumTi4.50622.000
      2VanadiumV6.11023.000
      3ChromiumCr7.19024.000
      4ManganeseMn7.21025.000
      5IronFe7.78426.000
      6NickelNi8.90828.000
      7CopperCu8.96029.000
      8ZincZn7.14030.000

    • Table 2. Simulated data fitting results

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      Table 2. Simulated data fitting results

      Base materialValidation materialZeqError of Zeq /%ρ /（g·cm-3）Error of ρ /%

      Ti

      Cr

      Ni

      Zn

      V

      Mn

      Fe

      Cu

      23.458

      24.809

      26.348

      28.961

      1.99

      0.76

      1.34

      0.13

      5.394

      7.258

      7.173

      8.724

      11.72

      0.67

      7.84

      2.63

      Ti

      Fe

      Ni

      Zn

      V

      Cr

      Mn

      Cu

      23.377

      23.857

      24.567

      28.682

      1.64

      0.60

      1.73

      1.10

      5.812

      7.877

      8.065

      8.699

      4.88

      9.56

      11.86

      2.92

      Ti

      Fe

      Cu

      Zn

      V

      Cr

      Mn

      Ni

      23.307

      23.796

      24.535

      27.807

      1.33

      0.85

      1.86

      0.69

      5.609

      7.580

      7.795

      9.570

      8.20

      5.43

      8.11

      7.43

    • Table 3. Actual experimental materials and parameters

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      Table 3. Actual experimental materials and parameters

      No.MaterialChemical symbolρ/（g·cm-3）Zeq
      1CopperCu8.96029.000
      2Copper hydroxideCu（OH）23.37025.306
      3Copper sulfideCuS4.60026.070
      4Copper nitrate basicCu（NO3）2·3Cu（OH）23.40023.857
      5Copper oxideCuO6.30027.074
      6Tribasic copper chlorideCu2（OH）3Cl3.50025.025
      7Cupric carbonate basicCu（OH）2·CuCO33.85024.466
      8Cuprous chlorideCuCl4.14226.055

    • Table 4. Actual data fitting results

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      Table 4. Actual data fitting results

      Base materialValidation materialZeqError of Zeq /%ρ /（g·cm-3）Error of ρ /%

      Cu

      CuS

      Cu（NO3）2·3Cu（OH）2

      Cu2（OH）3Cl

      Cu（OH）2

      CuO

      Cu（OH）2·CuCO3

      CuCl

      25.679

      25.938

      24.179

      24.852

      1.47

      4.19

      1.17

      4.62

      3.705

      6.126

      3.805

      4.096

      9.95

      2.76

      1.16

      1.12

      Cu

      Cu（NO3）2·3Cu（OH）2

      CuO

      Cu2（OH）3Cl

      Cu（OH）2

      CuS

      Cu（OH）2·CuCO3

      CuCl

      24.144

      23.641

      26.368

      25.279

      4.60

      9.32

      7.77

      2.98

      3.724

      4.105

      3.903

      4.168

      10.51

      10.75

      1.37

      0.63

      Cu（NO3）2·3Cu（OH）2

      CuO

      Cu2（OH）3Cl

      CuCl

      Cu

      Cu（OH）2

      CuS

      Cu（OH）2·CuCO3

      26.936

      26.962

      23.271

      24.634

      7.12

      6.54

      10.74

      0.69

      9.372

      3.541

      4.867

      3.455

      4.59

      5.07

      5.81

      10.26

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    Siyu Li, Xinrui Zhang, Ailong Cai, Shaoyu Wang, Lei Li, Bin Yan. Estimation of Equivalent Atomic Number and Density for Bronze Vessels Based on Spectral Computed Tomography[J]. Acta Optica Sinica, 2024, 44(4): 0412003

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    Paper Information

    Category: Instrumentation, Measurement and Metrology

    Received: Sep. 28, 2023

    Accepted: Dec. 1, 2023

    Published Online: Mar. 4, 2024

    The Author Email: Yan Bin (ybspace@hotmail.com)

    DOI:10.3788/AOS231611

    CSTR:32393.14.AOS231611

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology