中子慢化

核燃料棒~（235）U富集度均匀性扫描装置中的中子慢化系统计算

Neutron Moderation Calculation for Nuclear Fuel Rod Scanner

中子慢化材料特性研究

Research on Characteristic of Neutron Moderating Material

氢化锆因具备诸多作为反应堆中子慢化材料的优点，有着良好的应用前景。

Zirconium hydride has excellent practical prospects due to its properties as neutron-moderator material in nuclear reaction piles .

4种金属对中子慢化能力由强到弱的顺序依次为：钨、铁、铅、铋；

Sorted by the moderating capabilities , the four metals are W , Fe , Pb and Bi .

针对概念设计中采用的两相虹吸氢回路系统，使用氟里昂113进行了1：1的模化试验研究，确定了中子慢化室含气率、热虹吸系统循环能力及各部件的初步结构形式和尺寸。

In order to determine the void fraction in neutron moderator , the circulation ability of the two-phase hydrogen thermal siphon system , and the structure of components of the CNS , the mockup test was performed using Freon-113 as working fluid .

中子在慢化器中碰撞冷却的过程，同时也存在中子的吸收作用。

Neutrons collide in the moderator ; meanwhile , absorption process also exists .

根据球体内随深度变化时中子的慢化程度有所差异，按两两垂直的方法把三个位置灵敏正比计数器安装在一个慢化球体内。

Based on the difference of the neutron distribution in the moderator , three position sensitive proportional counters which are perpendicular each other are inserted into the moderator .

PAAS/PVA凝胶颗粒具有柔软的质地及较高的溶胀度和溶胀速率。结论：？1.PVA/PEO水凝胶材料可作为金属离子等辐射屏蔽物质的载体，为进一步研究中子屏蔽慢化复合材料提供了新的途径。

The PAAS / PVA gels has the good quality and higher rate of swelling . Conclusion : PVA / PEO hydrogel materials can be used as the carrier of neutron radiation shielding material , it provides new evidence to further study the neutron shielding and slowing compound materials .

小型中子照相装置慢化体的研究

The study of the moderator used in the small-size neutron radiography facility volume graphics body image depression

该系统用于将来自于反应堆堆芯的中子束进行慢化处理，使其速度降低，密度增加，获得冷中子。

The principle of CNS is that high-gain cold neutron is obtained by decreasing the velocity and increasing the density of neutron beams which produced from reactor core moderator .

铅基材料具有中子吸收和慢化能力弱、熔点低、沸点高、化学稳定性好等优点，铅基反应堆已成为第四代反应堆及加速器驱动系统的主要发展方向。

Lead-based material has advantages of weak neutron absorption and moderation ability , low melting point , high boiling point , good chemical stability , lead-based reactor has become the main development direction of the fourth generation reactors and accelerator driven systems .

用MonteCarlo的方法研究了中子在水中的慢化和反射层对中子能谱的影响。

The moderation of neutron in light water and the impact of neutron reflector on neutron spectrum are investigated with the Monte Carlo method .

d-D和d-T中子源中子照相慢化准直屏蔽系统模拟设计

Simulation Design on Beam Shaping Assembly for Neutron Radiography Based d-D and d-T Neutron Source

小型中子源14MeV中子慢化体结构的研究（Ⅰ）

A study of the moderator structure used in a small-size 14 MeV neutron source (ⅰ)

一种降低CARR堆冷中子源氢系统中子慢化室内含气率的方法

Method to Reduce Void Fraction in the Neutron Moderator Cell of CARR CNS

如中国散裂中子源选用液态甲烷作为低能中子的慢化器材料之一。

For instant , China Spallation Neutron Source uses liquid methane as material of one of the moderators .

对于核燃料棒235U富集度均匀性扫描装置，为了合理有效地利用252Cf中子源，提高检测灵敏度，需要合理选择中子慢化材料，优化中子慢化过程。

In order to use ~ ( 252 ) Cf source effectively and improve testing sensitivity of the nuclear fuel scanner , appropriate moderation material should be selected carefully , and the process of neutron moderation should be optimized .