Qing-shan WANG, Dong-yang WANG, Xiong-jie ZHANG, Bin TANG, He-xi WU. Research on a Decomposing Method of Energy Spectrum Overlapping Peaks Based on Gaussian Sharpening Method[J]. Spectroscopy and Spectral Analysis, 2021, 41(10): 3245
- Spectroscopy and Spectral Analysis
- Vol. 41, Issue 10, 3245 (2021)
Fig. 1. Gauss sharpening operator (A= 1, μ= 0, m =200)
(a): Gaussian sharpening operator with different sharpening factork (σ =0.5); (b): Gaussian sharpening operator with different standard deviation σ (k =0.043 3)
(a): Gaussian sharpening operator with different sharpening factor
Fig. 2. Overlapping peak model (SNR=60 dB)
Fig. 3. Comparison of two sharpening results of overlapping peaks
(a): Traditional sharpening results (k =46); (b): Gaussian sharpening result (A =1.12, k =5, m =5, μ =0, σ =0.5)
(a): Traditional sharpening results (
Fig. 4. Nonlinear fitting results of overlapping peak by GSM
Fig. 5. Detector model
1: NaI; 2: Air; 3: MgO; 4: Al; 5: SiO2
1: NaI; 2: Air; 3: MgO; 4: Al; 5: SiO2
Fig. 6. Mixed source simulated γ energy spectrum based on MCNP
Fig. 7. Decomposition result of simulating γ energy spectrum of mixed source by GSM
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Table 1. Peak position decomposition result of GSM for standard Gaussian overlapping peak model/%
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Table 2. Peak area decomposition result of GSM for standard Gaussian overlapping peak model/%
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Table 3. Numerical analysis results of simulated γ energy spectrum by GSM
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