thermal energy neutron

A mathematic-physical equation that describes the natural neutron radiation field is theoretically established, in which the natural neutron flux is considered for the fast neutron group ( E-n> 0.1MeV) and slow-thermal neutron group according to neutron energy.

将天然中子按能量分为快中子组（En>0.1MeV）与慢热中子组，建立了地-空界面上天然快中子流与慢热中子流粒子注量率随空间分布的数理方程。

Neutron Fluence Rate and Energy Spectrum in SPRR-300 Reactor Thermal Column

SPRR-300反应堆大热柱内中子注量率及能谱分布

For a system consisting of both high energy external neutron source and thermal neutron zone, a neutronics calculation method is developed based on the combination of the Sn and cell parameter calculation codes.

对于既具有高能量外中子源又包含热中子区域的快热耦合系统，本文将离散坐标法Sn与栅格计算程序相结合，给出可用于快热耦合系统的中子学确定论计算工具。

Vanadium alloys are better than ferritic/ matensitic as attractive candidate materials for neutron interactive structural components of fusion energy system, because of their high temperature strength, high thermal stress factor, low activation for neutron irradiation and so on.

作为聚变堆的候选结构材料，钒合金的高温强度，热能应力因子以及中子辐照低活化性能等等，相比铁素体/马氏体钢更优良。

The result shows: it's effective garments to shield thermal and middle& energy neutron, and available in many places.

表明这是一种能有效地屏蔽热中子和中能中子的防护器具，可用于许多场所。

The neutron energy spectrum at the thermal column of the heavy water reactor of China Institute of Atomic Energy has been measured by using a mechanical chopper by time-of-flight method. The result shows that the energy spectrum deviates from Maxwell distribution.

利用飞行时间法，用机械选择器测量了中国原子能科学研究院重水反应堆热柱的中子能谱.结果表明，该热柱能谱和理论Maxwel谱有偏离。