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Article Navigation >  Nuclear Physics Review  > 2015  >  32(4): 435-439

JIANG Jing, WANG Liming, NIE Yangbo, RUAN Xichao, HUANG Hanxiong, LI Xia. Study of the Experimental Method of (n,2n) Reaction Cross Section Determination with Direct Neutron Measurements[J]. Nuclear Physics Review, 2015, 32(4): 435-439. doi: 10.11804/NuclPhysRev.32.04.435
Citation: JIANG Jing, WANG Liming, NIE Yangbo, RUAN Xichao, HUANG Hanxiong, LI Xia. Study of the Experimental Method of (n,2n) Reaction Cross Section Determination with Direct Neutron Measurements[J]. Nuclear Physics Review, 2015, 32(4): 435-439. doi: 10.11804/NuclPhysRev.32.04.435
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Study of the Experimental Method of (n,2n) Reaction Cross Section Determination with Direct Neutron Measurements

doi: 10.11804/NuclPhysRev.32.04.435
  • 1.

    Nuclear and radiation safety center, Beijing 100082,China;

  • 2.

    State Nuclear Security Technology Center, Beijing 100037, China;

  • 3.

    China Institute of Atomic Energy, Beijing 102413, China

  • Received Date: 2015-02-27
  • Accepted Date: 2015-12-20
  • Publish Date: 2015-12-20
  • (n,2n) reaction cross section from 169Tm at 14.3 MeV was measured with the direct emittedneutron coincidence detecting method, using abnormal fast neutron TOF spectrometer on the HI-13 Tandem Accelerator at CIAE. Monte-Carlo method was used to simulate the generation of secondary neutron and correct the experimental data considering neutron flux attenuation, multiple scattering and finite geometry correction. Combining with evaluated spectra given by SUNF program, the experimental measurement results of the (n,2n) reaction cross sections were given. Cross sections of measurements were normalized by using neutron elastic scattering differential cross section as a standard section, and a recoil proton telescope was used to measure recoiling proton from the n-p reaction to monitor neutron flux rate. After comparing the experimental results with evaluated data, the feasibility of the direct emitted-neutron coincidence detecting method is discussed.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Study of the Experimental Method of (n,2n) Reaction Cross Section Determination with Direct Neutron Measurements

doi: 10.11804/NuclPhysRev.32.04.435
  • 1. Nuclear and radiation safety center, Beijing 100082,China;
  • 2. State Nuclear Security Technology Center, Beijing 100037, China;
  • 3. China Institute of Atomic Energy, Beijing 102413, China
  • Received Date: 2015-02-27
  • Accepted Date: 2015-12-20
  • Publish Date: 2015-12-20

Abstract: (n,2n) reaction cross section from 169Tm at 14.3 MeV was measured with the direct emittedneutron coincidence detecting method, using abnormal fast neutron TOF spectrometer on the HI-13 Tandem Accelerator at CIAE. Monte-Carlo method was used to simulate the generation of secondary neutron and correct the experimental data considering neutron flux attenuation, multiple scattering and finite geometry correction. Combining with evaluated spectra given by SUNF program, the experimental measurement results of the (n,2n) reaction cross sections were given. Cross sections of measurements were normalized by using neutron elastic scattering differential cross section as a standard section, and a recoil proton telescope was used to measure recoiling proton from the n-p reaction to monitor neutron flux rate. After comparing the experimental results with evaluated data, the feasibility of the direct emitted-neutron coincidence detecting method is discussed.

JIANG Jing, WANG Liming, NIE Yangbo, RUAN Xichao, HUANG Hanxiong, LI Xia. Study of the Experimental Method of (n,2n) Reaction Cross Section Determination with Direct Neutron Measurements[J]. Nuclear Physics Review, 2015, 32(4): 435-439. doi: 10.11804/NuclPhysRev.32.04.435
Citation: JIANG Jing, WANG Liming, NIE Yangbo, RUAN Xichao, HUANG Hanxiong, LI Xia. Study of the Experimental Method of (n,2n) Reaction Cross Section Determination with Direct Neutron Measurements[J]. Nuclear Physics Review, 2015, 32(4): 435-439. doi: 10.11804/NuclPhysRev.32.04.435
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