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Nuclear Fusion and Plasma Physics ›› 2004, Vol. 24 ›› Issue (1): 15-18.

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Calculation of DD thermonuclear fusion neutron yield and flux in the HL-2A tokamak

LI Wen-zhong,YANG Jin-wei,ZHANG Wei,ZENG Qing-xi   

  1. (Southwestern Institute of Physics, Chengdu 610041)
  • Received:2002-10-09 Revised:2003-07-09 Online:2004-03-15 Published:2024-11-13

HL-2A 装置上 DD 热核聚变中子产额和通量的估算

郦文忠,杨进蔚,张 炜,曾庆希   

  1. (核工业西南物理研究院,成都 610041)
  • 基金资助:
    国家自然科学基金(10175021);核工业西南物理研究院人才再培养基金

Abstract:

Based on an advanced MCNP3B code with the Monte-Carlo method‚the yield and flux of DD thermonu-clear fusion neutrons in the HL-2A tokamak have been calculated.For the branch of DD fusion D+D→P+T , when only 10% tritium in the D(D, p) T fusion reacting with deuterium D(T , n)4He fusion occur , the yield and flux are higher than that of pure D(D , n)3He fusion.The results of calcultion provide basis for developing new detection systems of fusion neutron, and neutron radiation protection.

Key words: Monte-Carlo calculation, Fusion neutron, DD neutron, DT neutron

摘要: 用蒙特卡罗方法, 利用 MCNP3B 编码计算了 HL-2A 装置芯部离子温度为5keV、离子密度为5×1013cm-3的 DD 热核聚变中子产额的空间分布,以及高场边 A、低场边 D、偏滤器的 B 和 C 点所在位置各种能量的中子辐射通量和平均通量。计算了由于 D+D→P+T 反应产生氚,在10%的氚与氘发生 DT 反应产生中子的条件下, 热核聚变中子的产额以及在 A、B、C、D 各位置通量发生的变化。计算结果为发展新的聚变中子诊断系统、辐射防护和环境评估提供了依据。

关键词: 蒙特卡罗方法, 聚变中子, DD 中子, DT 中子

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