Patent ID: 11933744
Assignee: CHINA INSTITUTE OF ATOMIC ENERGY
Field: Measurement (Instruments)
Classification: CPC G  Y | IPC G

Claim 8:
9. A method for a transmission reconstruction distortion correction for a segmented γ scanning, comprising:
step S002. simulating and calculating a transmission measurement process, based on a segmented γ scanning measurement system, so as to establish a transmission reconstruction distortion correction database with respect to a transmission thickness of a transmission object, an equivalent water density of the transmission object, an original reconstruction density of the transmission object, a measurement source distance, an energy of a γ-ray, and a space angle cosine of a transmission source;
step S004. fitting a corresponding relationship of the equivalent water density of the transmission object with respect to the space angle cosine of the transmission source, the energy of the γ-ray, the original reconstruction density of the transmission object, the transmission thickness of the transmission object, and the measurement source distance based on the transmission reconstruction distortion correction database; and
step S006. performing a transmission reconstruction distortion correction on a sample to be measured, comprising:
characterizing a space angle cosine of a transmission source of the segmented γ scanning measurement system corresponding to the sample to be measured using the method according to claim 1;
obtaining a transmission thickness of the sample to be measured and the measurement source distance by a measurement;
determining an original reconstruction density of the sample to be measured by a transmission measurement on the sample to be measured; and
reading an equivalent water density of the sample to be measured from the transmission reconstruction distortion correction database according to the corresponding relationship fitted in step S004 by using the characterized space angle cosine of the transmission source, the energy of the γ-ray, the original reconstruction density of the sample to be measured, the transmission thickness of the sample to be measured, and the measurement source distance.