期刊文献+

主动法中子时间关联符合测量探测金属铀质量和丰度 被引量:3

Active Method of Neutron Time Correlation Coincidence Measurement to Authenticate Mass and Enrichment of Uranium Metal
下载PDF
导出
摘要 主动法中子时间关联符合测量是金属铀核查认证技术的重要手段之一。本文通过数值模拟分析了窄束252 Cf中子源诱发不同质量、不同丰度的金属铀材料的中子输运过程,并获得了其时间关联符合计数。通过分析时间关联符合计数特征参数,验证了时间关联符合计数的FWTH与增殖系数、FWTH内的总计数与增殖系数和235 U质量的乘积及外中子源衰减与金属铀总质量的正比关系,由此建立了金属铀质量和丰度的主动中子时间关联符合测量探测方法。 The active methodology of time correlation coincidence measurement of neutron is an effective verification means to authenticate uranium metal.A collimated 252Cf neutron source was used to investigate mass and enrichment of uranium metal through the neutron transport simulation for different enrichments and different masses of uranium metal,then time correlation coincidence counts of them were obtained.By analyzing the characteristic of time correlation coincidence counts,the monotone relationships were founded between FWTH of time correlation coincidence and multiplication factor,between the total coincidence counts in FWTH for time correlation coincidence and mass of 235U multiplied by multiplication factor,and between the ratio of neutron source penetration and mass of uranium metal.Thus the methodology to authenticate mass and enrichment of uranium metal was established with time correlation coincidence by active neutron investigation.
出处 《原子能科学技术》 EI CAS CSCD 北大核心 2011年第4期389-393,共5页 Atomic Energy Science and Technology
关键词 时间关联 金属铀 质量 丰度 time correlation uranium metal mass enrichment
  • 相关文献

参考文献9

  • 1REILLY D, ENSSLIN N, SMITH H, et al. Passive nondestructive assay of nuclear materi als, LA-UR-90-732 [R]. USA: LANL, 1991.
  • 2MATTINGLY J K, NEAL J S, MIHALCZO J T. Time-dependent coincidence method to meas- ure plutonium mass and multiplication, Y/LB- 16121[R]. USA:[s. n.], 2001.
  • 3MIHAI.CZO J T, VALENTINE T E, MUL- LENS J A, et al. Physical and mathematical de scription of nuclear weapons identification system signatures, Y/LB-15946, R2[R]. USA:[s. n.], 1997.
  • 4MIHALCZO J T, VALENTINE T E, MUL- I.ENS J A, et al. NMIS with gamma spectrome- try for attributes of Pu and HEU, explosives and chemical agents, Y/LB-16123, R1 [R]. USA: [s. n.], 2002.
  • 5MIHALCZO J T, MULLENS J A, MATTING- LY J K, et al. Physical description of nuclear materials identification system signatures [ J ]. Nucl Instrum Methods Phys Res A, 2000, 450: 531-555.
  • 6CHIANG L G, MATTINGLY J K, RAMSEY J A, et al. Verification of uranium mass and enrich- ments of highly enriched uranium (HEU) using the nuclear materials identification systems (NMIS), Y/ LB-16056 [R]. USA: [s. n.], 2000.
  • 7MATTINGLY J K, VALENTINE T E, MI- HALCZO J T. Use of the nuclear materials identification system ( NMIS ) for enhanced receipt confirmation measurements at the Oak Ridge Y-12 Plant, Y/LB-16025 [R]. USA: [s. n. ], 2000.
  • 8POZZI S A, PADOVANI E, MARSEGUERRA M. MCNP-PoliMi: A Monte-Carlo code for cor- relation measurements[J]. Nuel Instrum Meth- ods Phys Res A, 2003, 513:550- 558.
  • 9DUBININ V P, KUVSHINOV M I, POPOV V A, et al. VNIIEF-ORNL joint plutonium meas urements with NMIS and results of plutonium at- tributes preliminary evaluations, Y/LB-16075 [R]. USA: [s.n.], 2000.

同被引文献40

  • 1赵德山,陈琦,陈想林.有源符合中子法探测高浓缩铀的技术研究[J].核电子学与探测技术,2004,24(6):726-728. 被引量:8
  • 2龚建,陈波,郝樊华.核材料的探测和识别[J].核电子学与探测技术,1995,15(6):334-338. 被引量:1
  • 3向永春,熊宗华,郝樊华,胡广春,章剑华.主动法探测贫化铀的实验研究[J].核电子学与探测技术,2007,27(2):376-379. 被引量:7
  • 4蒙延泰,王效忠,贾向军,许小明,李泽,张其欣.铀标样的无损测量检验[J].原子能科学技术,2007,41(1):121-124. 被引量:5
  • 5MIHALCZO J T,MULLENS J A,MATITNGLY J K. Physical description of Nuclear Materials Identification System(NMIS)signatures[J].Nuclear Instruments and Methods in Physics Research,2000.531-555.
  • 6MIHALCZO J T,MATYINGLY J K,MULLENS J A. NMIS with Gamma Spectrometry for Attributes of Pu and HEU,Explosives and Chemical Agents[U.S.Department of Energy Report No.:Y/LB-16.123][R].2002.
  • 7郝樊华.在未来实质核裁军中探测核弹头和保护敏感信息[A],2003237-253.
  • 8段绍杰.中子学宏观实验[M]北京:国防工业出版社,2008.
  • 9KODELI I,TRKOV A,CAPOTE R. Evaluation and use of the prompt fission neutron spectrum and spectra co-variance matrices in criticality and shielding[J].Nuclear Instruments and Methods in Physics Research,2009.540-552.
  • 10GROGAN B R. Estimating the Mass of UO3 Powder in a Container Using MCNP-PoliMi Simulations of NMIS Measurements[D].The University of Tennessee,2008.

引证文献3

二级引证文献10

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部