Prompt gamma activation imaging technology under idealized model

Geng Shuqun; Jia Wenbao; Hei Daqian; Cheng Can

doi:10.11884/HPLPB201830.170246

Volume 30 Issue 1

Jan. 2018

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Geng Shuqun, Jia Wenbao, Hei Daqian, et al. Prompt gamma activation imaging technology under idealized model[J]. High Power Laser and Particle Beams, 2018, 30: 016005. doi: 10.11884/HPLPB201830.170246

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Geng Shuqun, Jia Wenbao, Hei Daqian, et al. Prompt gamma activation imaging technology under idealized model[J]. High Power Laser and Particle Beams, 2018, 30: 016005. doi: 10.11884/HPLPB201830.170246

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Prompt gamma activation imaging technology under idealized model

doi: 10.11884/HPLPB201830.170246

Geng Shuqun^1
,,
Jia Wenbao^{1, 2
,
,},
Hei Daqian^{1, 2},
Cheng Can¹

1.
College of Materials Science and Engineering, Nanjing University of Aeronautics & Astronautics, Nanjing 211106, China
2.
Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Nanjing 211106, China

Received Date: 2017-06-21
Rev Recd Date: 2017-08-27
Publish Date: 2018-01-15

Abstract

Abstract

Prompt gamma activation imaging (PGAI) is a new type of element distribution imaging method in a non-destructive way. At present, the PGAI measure platforms which have been completed are all applied under the ideal model, and only for analyzing small pieces of sample by using the neutron source at the reactor. To discuss the accuracy and validate the feasibility of PGAI technology based on cold and thermal neutron, the ideal model of PGAI was analyzed by using Monte Carlo software. A homogeneous sample of 5 cm×5 cm×1 cm which consisted of pure iron was measured by adopting collimated neutron beam and the high-purity Ge detector, the dimension of the isovolume was 1 cm×1 cm×1 cm. It is shown that two kinds of energy neutrons all has been successfully used in PGAI. But no matter what kind of energy neutrons, when measuring the homogeneous single element sample, the consistency of image reconstruction results can't be guaranteed because of the neutron self-absorption, neutron scattering and γ-ray self-absorption. Therefore we need to analyze the physical mechanism and establish proper correction model in our later work.
- prompt gamma activation imaging,
- Monte Carlo,
- reconstruction image,
- neutron scatter,
- neutron self-absorption

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References(11)

References

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