Weak peak identification of gamma spectrum based on singular value decomposition

能量 Energy / keV	道址 Channel	所寻峰位 Peak Position
能量 Energy / keV	道址 Channel	一阶导数法^[1] First deriva-tive method	对称零面积法^[2] Symmetric zero area method	连续截断矩阵SVD^[9] Continuous truncat-ed matrix SVD	Hankel矩阵SVD^[9] Hankel matrix SVD	双向循环矩阵SVD Bidiagonal cyclic matrix SVD	GammaVision 6.0
85.41	200	200	―	197	—	202	—
295.94	697	697	697	696	697	697	696
488.75	1 149	1 150	1 150	1 148	1 150	1 150	1 149
563.91	1 326	1 327	1 326	1 325	1 327	1 328	1 327
586.13	1 379	1 379	1 379	1 377	1 379	1 379	1 378
678.61	1 596	1 596	1 596	1 596	1 596	1 596	1 595
688.64	1 620	1 620	1 619	1 620	1 620	1 620	1 619
719.24	1 692	—	1 692	1 692	—	1 692	—
755.39	1 776	1 776	1 776	1 776	—	1 777	1 776
810.44	1 905	1 905	1 905	1 904	1 906	1 906	1 905
919.28	2 162	—	2 162	2 160	—	2 162	2 161
989.07	2 326	2 326	2 326	2 325	—	2 326	2 325
1 004.12	2 363	2 363	2 363	2 364	2 365	2 364	2 362
1 122.98	2 640	2 640	2 640	2 640	2 641	2 641	2 639
1 213.00	2 852	2 852	2 852	2 852	2 852	2 852	2 851
1 233.81	2 900	2 900	2 900	2 900	2 901	2 901	2 899
1 249.98	2 938	—	—	2 937	—	2 939	—
1 274.06	2 996	2 996	—	2 996	—	2 997	2 995
1 299.19	3 054	3 054	3 054	3 052	3 054	3 054	3 053
1 433.90	3 370	—	—	3 369	—	3 371	3 369
1 457.58	3 426	3 426	3 426	3 425	3 427	3 427	3 425
1 529.80	3 596	3 596	3 596	3 596	3 596	3 596	3 594
1 643.27	3 862	3 862	—	3 861	—	3 863	3 861
假峰 False peak	—	47; 68; 205; 2 030; 2 571; 2 862; 2 890	45; 62; 78;	44; 269; 592; 1 096	64; 66; 75; 78; 80; 856; 1 331; 2 633; 3 045; 3 583	48; 3 294	45

Table 2. The performance of different processing methods

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Table 2. The performance of different processing methods

	弱峰 Weak peak	假峰 False peak	平均峰位偏移 Average peak shift	查准率 Precision	查全率 Recall	F1值 F1 score
一阶导数法 First derivative method	19	7	0.11	0.73	0.83	0.78
对称零面积法 Symmetric zero area method	18	3	0.11	0.86	0.78	0.82
连续截断矩阵SVD Continuous truncated matrix SVD	23	4	0.83	0.85	1.00	0.91
Hankel矩阵SVD Hankel matrix SVD	14	10	0.57	0.58	0.61	0.60
双向循环矩阵SVD Bidiagonal cyclic matrix SVD	23	2	0.65	0.92	1.00	0.94
GammaVision 6	20	1	0.90	0.95	0.87	0.91

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Feng CHEN, Jianbin ZHOU, Yi LIU. Weak peak identification of gamma spectrum based on singular value decomposition[J]. NUCLEAR TECHNIQUES, 2024, 47(9): 090404

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Paper Information

Category: NUCLEAR ELECTRONICS AND INSTRUMENTATION

Received: Dec. 27, 2023

Accepted: --

Published Online: Nov. 13, 2024

The Author Email:

DOI:10.11889/j.0253-3219.2024.hjs.47.090404

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. The peak-finding results of 152Eu spectrum under different processing methods

Table 1. The peak-finding results of 152Eu spectrum under different processing methods

Table 2. The performance of different processing methods

Table 2. The performance of different processing methods

Table 1. The peak-finding results of ¹⁵²Eu spectrum under different processing methods

Table 1. The peak-finding results of ¹⁵²Eu spectrum under different processing methods