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加速器驱动次临界系统的中高能质子轰击厚靶中子学实验研究

加速器驱动次临界系统的中高能质子轰击厚靶中子学实验研究[J]. 原子能科学技术, 2002, 36(6): 554-554. DOI: 10.7538/yzk.2002.36.06.0554
引用本文: 加速器驱动次临界系统的中高能质子轰击厚靶中子学实验研究[J]. 原子能科学技术, 2002, 36(6): 554-554. DOI: 10.7538/yzk.2002.36.06.0554
GUO Shi-lun 1, LI Li 1, SHI Yong-qian 1, SHEN Qing-biao 1, WAN Jun-sheng 2, R.Brandt 3, P. Vater 3, B.A. Kulakov 4, M.I. Krivopustov 4, A.N. Sosnin 4 (1. China Institute of Atomic Energy, P.O. Box 275-96,Beijng 102413, China; 2. Northwest Institute of Nuclear Technology, P.O.Box 69-19, Xi'. Experimental Study on Neutronics in Bombardment of Thick Targets by High Energy Proton Beams for Accelerator-driven Sub-critical System[J]. Atomic Energy Science and Technology, 2002, 36(6): 554-554. DOI: 10.7538/yzk.2002.36.06.0554
Citation: GUO Shi-lun 1, LI Li 1, SHI Yong-qian 1, SHEN Qing-biao 1, WAN Jun-sheng 2, R.Brandt 3, P. Vater 3, B.A. Kulakov 4, M.I. Krivopustov 4, A.N. Sosnin 4 (1. China Institute of Atomic Energy, P.O. Box 275-96,Beijng 102413, China; 2. Northwest Institute of Nuclear Technology, P.O.Box 69-19, Xi'. Experimental Study on Neutronics in Bombardment of Thick Targets by High Energy Proton Beams for Accelerator-driven Sub-critical System[J]. Atomic Energy Science and Technology, 2002, 36(6): 554-554. DOI: 10.7538/yzk.2002.36.06.0554

加速器驱动次临界系统的中高能质子轰击厚靶中子学实验研究

详细信息
  • 中图分类号: X382;O571422

  • 摘要: 利用俄罗斯杜布纳联合核子研究所的高能加速器进行加速器驱动次临界系统 (ADS)靶区中子学研究。用 0. 5 33、1. 0、3.7和 7 4GeV质子轰击U(Pb)、Pb和Hg靶的测量结果表明 :U(Pb)和Pb与Hg靶的中子产额比分别为 ( 2 0 1± 0 1 0 )和 ( 1 76± 0 33), 从获得较强中子的角度看, Hg作为ADS靶是不利的 沿厚 2 0cm靶的中子产额随入射质子穿透深度增大而下降, 质子能量越低, 中子产额下降越快, 为在较大厚度范围内获得较均匀的中子场, 质子能量不应低于 1GeV 不同能量质子产生的次级中子能谱相近, 但随质子能量提高, 较高能量中子的比例逐渐增大。

     

    Abstract: The experimental study on neutronics in the target region of accelerator-driven sub-critical system is carried out by the high energy accelerator in Joint Institute for Nuclear Research, Dubna, Russia. The experiments with targets U(Pb), Pb and Hg bombarded by 0.533, 1.0, 3.7 and 7.4 GeV proton beams show that the neutron yield ratio of U(Pb) to Hg and Pb to Hg targets is ( 2.10±0.10) and (1.76±0.33), respectively. Hg target is disadvantageous to U(Pb) and Pb targets to get more neutrons. Neutron yield drops along 20 cm thick targets as the thickness penetrated by protons increases. The lower the energy of protons, the steeper the neutron yield drops. In order to get more uniform field of neutrons in the targets, the energy of protons from accelerators should not be lower than 1 GeV. The spectra of secondary neutrons produced by different energies of protons are similar, but the proportion of neutrons with higher energy gradually increases as the proton energy increases.

     

  • [1] 丁大钊.未来核能利用的方案探讨———加速器驱动放射性洁净核能系统[A]. 赵志祥.加速器驱动放射性洁净核能系统概念研究论文集[C]. 北京:原子能出版社,2000.3~16.
    [2] BisplinghoffB, BradnovaV, BrandtR, etal.OnNeutronGenerationinMassiveCu targetatIrradia tionWith22and44GeVCarbonIons[J]. JRa dioanalNuclChem,1995,189:196~206.
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出版历程
  • 收稿日期:  2002-01-10
  • 刊出日期:  2002-11-19

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