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The design of accelerator-based epithermal neutron source target used in boron neutron capture therapy

测试结果表明，在现有实验室条件下未能观察到中子和超热现象。

It was verified that the epithermal neutron time-spectrometry logging or the epithermal neutron logging is the most effective method. The engineering parameters of the instrument were calculated.

在此基础上，再研究井壁超热中子时间谱测井仪或井壁超热中子测井仪的工程参数。

The annealing behavior of V_2 in CZSi introduced by fast neutron irradiation was investigated by Flourier infrared spectrometric analyzer, and the effect of the dose of the fast neutron irradiation on the formation of V_2 was also studied in detail.

通过傅立叶红外光谱仪技术研究了由快中子辐照直拉硅中引入的辐照缺陷——双空位(V2)退火行为，主要研究了不同中子辐照剂量对双空位的影响。

The neutron gauge is composed of a point type of neutron source (241Am-Be) and a surface in short source distance detector.

该中子计是由点状中子源(241Am—Be)和面型探测器组成的。

We assume the core of neutron stars is a β-stable strange matter consisting of nucleons and hyperons, then the influences of the hyperon-hyperon interaction on the properties of neutron stars are studied in the relativistic mean-field approximation.

我们假定中子星内部物质是由核子与超子混合组成的β稳定的奇异强子物质，在相对论平均场框架内研究了超子超子相互作用对中子星性质的影响。

The oil-water interface neutron gauge for oil storage tank is developed by using the neutron back scattering technique.

利用中子背散射技术，研制出一种立罐油水界面中子测量仪。

Employing a general Monte Carlo code MCNP, the following Monte Carlo calculations which are important in the design of PAN shufflers were done:(1) optimization of moderators;(2) detection efficiency variation with the position of a neutron source;(3) multiplication effects and self-shielding effects;(4) isotopic effects;(5) shielding properties of the storage chamber and the assay chamber;(6) the relation between 〓Cf source strength and background neutron count rates.

文章详细讨论了无源方式下中子总计数分析和符合计数分析以及有源方式下缓发中子分析的基本原理，在此基础上，运用通用蒙特卡罗程序MCNP计算了桶装废物分类装置研制过程中所关心的一系列问题：慢化体的优化设计、探测效率随中子源位置的变化情况、增殖和自屏蔽效应、同位素效应、贮存室和测量室对〓Cf源的屏蔽能力、〓Cf源强度与本底计数率的关系，等。

In order to design a grease stain thickness non-destructive detector for petroleum pipeline, the decay rate of neutron and γ-ray in different petroleum pipeline of grease stain thickness were calculated with Monte-Carlo method. The response relationship between particle (neutron or γ) and grease stain thickness was found.

为设计1种基于射线透射原理的石油输送管道油垢厚度无损检测仪，利用蒙特卡罗方法分别计算中子、γ射线在不同油垢厚度输油管道中的穿透率，建立油垢厚度与射线计数之间的响应关系。

Based on the design of Chinese Spallation Neutron Source target station neutron beam extraction pipes, shielding efficiency was evaluated using the two-dimensional discrete ordinates transport code DORT for different design models.

基于中国散裂中子源靶站中子通道设计，采用二维离散纵标程序DORT对中子导出通道各种设计方案的屏蔽效果进行计算分析。

When the proton and neutron collide each other, the hadron emerges from the neutron then trapped between nucleons acting as the strong force medium.

当质子和中子相互碰撞时，强子从中子中溢出充当强力的介质。

It is also known as one of the most poisonous naturally occurring substances.

它也被称为一个最自然发生的有毒物质。

The greatest stress is found at the location on the cross section where V is the largest.

最大应力出现在横截面上V为最大的地方。