Monte Carlo simulation of prompt <em>&gamma;</em>-ray spectra from depleted uranium under D-T neutron irradiation and electron recoil spectra in a liquid scintillator detector

Jian-Guo Qin; Cai-Feng Lai; Rong Liu; Tong-Hua Zhu; Xin-Wei Zhang; Bang-Jiao Ye

doi:10.1088/1674-1137/40/3/036201

Chinese Physics C> 2016, Vol. 40> Issue(3) : 036201 DOI: 10.1088/1674-1137/40/3/036201

Monte Carlo simulation of prompt γ-ray spectra from depleted uranium under D-T neutron irradiation and electron recoil spectra in a liquid scintillator detector

1.
Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China
2.
Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, P.O.Box 213, Mianyang 621900, China
3.
Graduate School, China Academy of Engineering Physics, Mianyang 621900, China
4.
Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, P.O.Box 213, Mianyang 621900, China
5.
Institute of Applied Physics and Computational Mathematics, P.O.Box 8009, Beijing 100088, China
6.
Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China

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Abstract：
To overcome the problem of inefficient computing time and unreliable results in MCNP5 calculation, a two-step method is adopted to calculate the energy deposition of prompt γ-rays in detectors for depleted uranium spherical shells under D-T neutron irradiation. In the first step, the γ-ray spectrum for energy below 7 MeV is calculated by MCNP5 code; secondly, the electron recoil spectrum in a BC501A liquid scintillator detector is simulated based on EGSnrc Monte Carlo Code with the γ-ray spectrum from the first step as input. The comparison of calculated results with experimental ones shows that the simulations agree well with experiment in the energy region 0.4-3 MeV for the prompt γ-ray spectrum and below 4 MeVee for the electron recoil spectrum. The reliability of the two-step method in this work is validated.
- Monte Carlo simulation ,
- depleted uranium ,
- prompt -ray ,
- energy spectrum ,
- recoil electron spectrum

References

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Jian-Guo Qin, Cai-Feng Lai, Rong Liu, Tong-Hua Zhu, Xin-Wei Zhang and Bang-Jiao Ye. Monte Carlo simulation of prompt γ-ray spectra from depleted uranium under D-T neutron irradiation and electron recoil spectra in a liquid scintillator detector[J]. Chinese Physics C, 2016, 40(3): 036201. doi: 10.1088/1674-1137/40/3/036201

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Received: 2015-04-02
Revised: 2015-09-18

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Supported by the National Natural Science Foundation of China (91226104) and National Special Magnetic Confinement Fusion Energy Research, China (2015GB108001)

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Monte Carlo simulation of prompt γ-ray spectra from depleted uranium under D-T neutron irradiation and electron recoil spectra in a liquid scintillator detector

Corresponding author: Jian-Guo Qin,

1. Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China

2. Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, P.O.Box 213, Mianyang 621900, China

3. Graduate School, China Academy of Engineering Physics, Mianyang 621900, China

4. Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, P.O.Box 213, Mianyang 621900, China

5. Institute of Applied Physics and Computational Mathematics, P.O.Box 8009, Beijing 100088, China

6. Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China

Received Date: 2015-04-02

Accepted Date: 2015-09-18

Available Online: 2016-02-29

Fund Project: Supported by the National Natural Science Foundation of China (91226104) and National Special Magnetic Confinement Fusion Energy Research, China (2015GB108001)

Abstract: To overcome the problem of inefficient computing time and unreliable results in MCNP5 calculation, a two-step method is adopted to calculate the energy deposition of prompt γ-rays in detectors for depleted uranium spherical shells under D-T neutron irradiation. In the first step, the γ-ray spectrum for energy below 7 MeV is calculated by MCNP5 code; secondly, the electron recoil spectrum in a BC501A liquid scintillator detector is simulated based on EGSnrc Monte Carlo Code with the γ-ray spectrum from the first step as input. The comparison of calculated results with experimental ones shows that the simulations agree well with experiment in the energy region 0.4-3 MeV for the prompt γ-ray spectrum and below 4 MeVee for the electron recoil spectrum. The reliability of the two-step method in this work is validated.

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Monte Carlo simulation of prompt γ-ray spectra from depleted uranium under D-T neutron irradiation and electron recoil spectra in a liquid scintillator detector

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Monte Carlo simulation of prompt γ-ray spectra from depleted uranium under D-T neutron irradiation and electron recoil spectra in a liquid scintillator detector

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