252Cf 随机脉冲源法测量深次临界瞬发中子衰减常数

宋凌莉, 周浩军, 金宇, 李建胜, 张翼, 李春远

宋凌莉, 周浩军, 金宇, 李建胜, 张翼, 李春远. 252Cf 随机脉冲源法测量深次临界瞬发中子衰减常数[J]. 原子能科学技术, 2006, 40(6): 714-717. DOI: 10.7538/yzk.2006.40.06.0714
引用本文: 宋凌莉, 周浩军, 金宇, 李建胜, 张翼, 李春远. 252Cf 随机脉冲源法测量深次临界瞬发中子衰减常数[J]. 原子能科学技术, 2006, 40(6): 714-717. DOI: 10.7538/yzk.2006.40.06.0714
SONG Ling-li, ZHOU Hao-jun, JIN Yu, LI Jian-sheng, ZHANG Yi, LI Chun-yuan. Measurement of Prompt Neutron Decay Constant for Deep Subcritical Assembly Using 252Cf as Randomly Pulsed Neutron Source[J]. Atomic Energy Science and Technology, 2006, 40(6): 714-717. DOI: 10.7538/yzk.2006.40.06.0714
Citation: SONG Ling-li, ZHOU Hao-jun, JIN Yu, LI Jian-sheng, ZHANG Yi, LI Chun-yuan. Measurement of Prompt Neutron Decay Constant for Deep Subcritical Assembly Using 252Cf as Randomly Pulsed Neutron Source[J]. Atomic Energy Science and Technology, 2006, 40(6): 714-717. DOI: 10.7538/yzk.2006.40.06.0714

252Cf 随机脉冲源法测量深次临界瞬发中子衰减常数

详细信息
  • 中图分类号: TL811.2

Measurement of Prompt Neutron Decay Constant for Deep Subcritical Assembly Using 252Cf as Randomly Pulsed Neutron Source

  • 摘要: 运用252Cf 随机脉冲源法时幅变换(TAC)方式测量系统,实验获得高浓缩铀椭球壳核系统的瞬发中子衰减常数α。采用单指数和双指数最小二乘法拟合,α值均为100μs-1。用蒙特卡罗方法模拟实验过程,α计算值为110μs-1。结果表明,该系统对深次临界α的测量是有效的。

     

    Abstract: Experiments were performed for determing prompt neutron decay constant α of highly enriched uranium spherical shell by randomly pulsed neutron nethod with a 252Cf source. α values from both least squares analysis of single exponential and two exponential fittings are in agreement and it is 100μs-1. α value calculated of 110μs-1 is also obtained by Monte-Carlo method. It is proved that the time-to-amplitude converter measuring system is effective for α determination of deep subcritical assemblies.

     

  • [1] MIHALCZO J T. The use of californium-252 as a randomly pulsed neutron source for prompt-neutron decay measurements[J]. Nucl Sci Eng,1974,(53):393-414.
    [2] 李建胜,张翼,金宇,等. 252Cf快裂变室研制[J]. 核电子学与探测技术,2001,21(4):264-267.
    LI Jiansheng, ZHANG Yi, JIN Yu, et al. Development of 252Cf fast fission chamber[J]. Nuclear Electronics & Detection Technology,2001,21(4):264-267(in chinese).
    [3] 周浩军,张翼,李建胜,等. n-γ分辨应用于252Cf 自发裂变中子飞行时间谱测量[J]. 核电子学与探测技术(待发表).
    ZHOU Haojun, ZHANG Yi, LI Jiansheng, et al. The application of n-γ discrimination in 252Cf spontaneous neutron TOF spectra measurement[J]. Nuclear Electronics 252Cf Detection Technology (in press,in Chinese).
计量
  • 文章访问数:  1401
  • HTML全文浏览量:  0
  • PDF下载量:  2769
  • 被引次数: 0
出版历程
  • 收稿日期:  2005-04-11
  • 修回日期:  2005-08-29
  • 刊出日期:  2006-11-19

目录

    /

    返回文章
    返回