	US 12,205,681 B1
	Nuclide identification method, system and electronic device
Jianwei Huang, Beijing (CN); Xuan Zhang, Beijing (CN); Linjian Wan, Beijing (CN); Dehong Li, Beijing (CN); Zhijun Yang, Beijing (CN); Chuanfeng Liu, Beijing (CN); Xiaole Zhang, Beijing (CN); Siming Guo, Beijing (CN); Yang Yang, Beijing (CN); Jianbo Cheng, Beijing (CN); and Yilun Xu, Beijing (CN)
Assigned to National Institute of Metrology, China, Beijing (CN)
Filed by NATIONAL INSTITUTE OF METROLOGY, CHINA, Beijing (CN)
Filed on Jul. 1, 2024, as Appl. No. 18/760,328.
Claims priority of application No. 202410107288.6 (CN), filed on Jan. 25, 2024.
Int. Cl. G16C 20/20 (2019.01)

CPC G16C 20/20 (2019.02)

20 Claims

1. A nuclide identification method, comprising:

receiving, at a computer, the time-energy information of a ray from a detector, and performing following steps:

determining whether the ray belongs to one of Region of Interests (ROIs) based on energy information in the time-energy information of the ray;

describing a sequence of all nuclear detection events in the ROI when the ray belongs to the one of the ROIs;

determining an energy Bayesian factor based on energy information in the described sequence of all the nuclear detection events;

determining an energy decision function based on the energy Bayesian factor;

determining a time interval in the ROI based on time information in the described sequence of all the nuclear detection events;

determining a time Bayesian factor based on the time interval;

determining a time decision function based on the time Bayesian factor;

combining the energy decision function and the time decision function to obtain a joint decision function of the ROI;

retrieving a potential nuclide corresponding to the ROI based on a characteristic γ ray corresponding to the ROT, and combining joint decision functions of respective ROIs corresponding to the retrieved nuclide to obtain a nuclide joint decision function;

determining whether the retrieved nuclide exists based on the nuclide joint decision function; and

outputting a result that the retrieved nuclide exists in respond to a determination that a value of the nuclide joint decision function is less than or equal to a first predefined value; or a result that the retrieved nuclide does not exist in respond to a determination that the value of the nuclide joint decision function is greater than or equal to a second predefined value, wherein the second predefined value is greater than the first predefined value; or a result of failure in respond to a determination that the value of the nuclide joint decision function is greater than the first predefined value and less than the second predefined value.