Scintillation pulse model-simplifying, reconstruction and energy-obtaining methods

Abstract

The invention discloses a simplified scintillation pulse model establishment method. The method comprises the following steps that an original scintillation pulse model Y'(t)=a*e<-(t-t0)*b>*[1-e<-(t-t0)*d>] is used in the reconstruction process of scintillation pulse signals obtained by practical sampling; for scintillation pulses of different energies, it is defined that a practical start moment t0 of the scintillation pulse, a pulse rise time related parameter b and a pulse fall time related parameter d are not changed and that only the pulse amplitude changes; and during scintillation pulse reconstruction, a moment of a pulse sampling value is used as the moment 0, and a simplified scintillation pulse model is y(t)=a*e<-(t-t'0)*b0>*[1-e<-(t-t'0)*d0>], wherein t'0, b0 and d0 represents empirical values of t0, b and d in the original scintillation pulse model respectively. The invention also discloses a scintillation pulse reconstruction method and a rapid energy information obtaining method on the basis of the simplified model. According to the methods, the complexity of reconstruction of the scintillation pulses can be reduced effectively, scintillation pulse reconstruction and energy information obtaining can be accelerated, and adverse influence on the system energy resolution is reduced as possible.

Description

technical field [0001] The invention belongs to the technical field of photoelectric detection, and relates to a method for model reconstruction and energy determination of high-speed scintillation pulses. Background technique [0002] The traditional digital scintillation pulse energy calculation method is to model the scintillation pulse (establish the original scintillation pulse model), and use the curve fitting method to reconstruct the scintillation pulse and obtain its energy value by integration. According to the different scintillation pulse mathematical models, when using the curve fitting method to reconstruct the scintillation pulse, it is necessary to fit 3 to 4 changes, which requires high computational complexity and long calculation time, as follows: [0003] The actual sampled pulse signal is reconstructed by the following original scintillation pulse model: [0004] [0005] where t 0 is the pulse start moment, b and d are parameters related to pulse r...

AI Technical Summary

Problems solved by technology

[0008] In the process of reconstruction and energy calculation of scintillation pulses using the above method, complex operations such as multiple power exponents and logarithms will be involved, which requires high computational complexity and long calculation time

In the actual computer operation process, it will greatly consume computing resources

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