Simulation of radiation field from isotopic gamma source collimation

Huang Yuchen; Qian Yikun; Feng Peng; Liu Yixin; Zhang Song; He Peng; Wei Biao; Mao Benjiang; Zhu Yadi

doi:10.11884/HPLPB202133.200294

Volume 33 Issue 3

Mar. 2021

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Yu Hailong, Wu Wenzhi. Temperature-dependent photoluminescence of CH3NH3PbBr3 crystal powder[J]. High Power Laser and Particle Beams, 2023, 35: 119001. doi: 10.11884/HPLPB202335.230103

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Huang Yuchen, Qian Yikun, Feng Peng, et al. Simulation of radiation field from isotopic gamma source collimation[J]. High Power Laser and Particle Beams, 2021, 33: 036002. doi: 10.11884/HPLPB202133.200294

Yu Hailong, Wu Wenzhi. Temperature-dependent photoluminescence of CH3NH3PbBr3 crystal powder[J]. High Power Laser and Particle Beams, 2023, 35: 119001. doi: 10.11884/HPLPB202335.230103

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Simulation of radiation field from isotopic gamma source collimation

doi: 10.11884/HPLPB202133.200294

Huang Yuchen^{1, 2
,},
Qian Yikun^{1, 2},
Feng Peng^{2
,
,},
Liu Yixin¹,
Zhang Song^{1, 2},
He Peng²,
Wei Biao²,
Mao Benjiang¹,
Zhu Yadi¹

1.
Institute of Nuclear Physics and Chemistry, CAEP, Mianyang 621900, China
2.
Key Laboratory of Optoelectronic Technology & Systems, Ministry of Education, Chongqing University, Chongqing 400044, China

Received Date: 2020-10-27
Rev Recd Date: 2021-01-22

Available Online: 2021-03-30

Publish Date: 2021-03-05

Abstract

Abstract

Aiming at the key technical issues of the reference radiation field size of isotropic sources, GB/T 12162 series of GB standards stipulates the size of the reference radiation field when using an isotropic source. However, there is no specific regulation for the size of the irradiation under collimation. To reduce the influence of scattering in the gamma reference radiation field when used for radiation detection or monitoring instrument verification and value calibration, Monte Carlo simulation was carried out to explore the effect of the size change of the irradiation chamber on the energy distribution and dose rate value during the radiation source collimation. The boundary conditions of the collimated gamma radiation irradiation chamber were obtained, and the details of the gamma reference radiation field boundary research method and related standards are established and improved. The study provides a new method or approach for the size design of the irradiation chamber under the collimated irradiation state.
- nuclear instrument calibration,
- reference radiation,
- collimated irradiation,
- Monte Carlo,
- boundary conditions

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References(17)

References

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