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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

  • 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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  • References

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    [2] J. E. Paul, A Survey of Nuclear-explosive Prompt Diagnostics, UCRL-53724, 1986
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    [5] E. Goldberg, L. F. Hansen, T. T. Komoto et al, Nucl. Sci. Eng., 105: 319-340 (1990)
    [6] E. Goldberg, L. F. Hansen, R. J. Howerton et al, Gamma-Ray Emission from Spheres Pulsed with D-T Neutrons: Results of May 1987 Experiments at RTNS-1. UCID-21276 (DE88 011357)
    [7] L. F. Hansen, Integral Measurements and Calculations of Neutron and Gamma-Ray Emission at 14 MeV and Overview of the Now Multi-User Tandem at LLNL, in Proceedings of the Conference on Neutron Physics (Kiev, Russia, 1987), p. 310-321
    [8] X-5 Monte Carlo Team, MCNPA General Monte Carlo N-Particle Transport Code, Version 5, Volume II: User's Guide, LA-CP-03-0245. Los Alamos National Laboratory, 2003
    [9] B. Perot, C. Carasco, S. Bernard et al, Appl. Radiat. Isotopes, 66: 421-343 (2008)
    [10] I. Kawrakow and D. W. O. Rogers, NRCC Report PIRS-701, 2005
    [11] D. G. Madland, Nucl. Phys. A, 722: 113-117 (2006)
    [12] E. V. Timothy, Ann. Nucl. Energy, 28: 191-201 (2001)
    [13] B. F. Richard, S. S. Virginia, S. Y. Frank et al, Table of Isotopes (Eighth Edition, Version1.0), March 1996

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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
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 shu
Milestone
Received: 2015-04-02
Revised: 2015-09-18
Fund

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

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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

    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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