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词汇 Neutron cross section
分类 英语词汇 英语翻译词典
释义

Neutron cross section

中文百科

中子截面

U-235核分裂中子截面随能量变化图
反应速率与截面的关系
Scattering (full line) and absorption (dotted) crossections of light element commonly used as neutron moderators, reflectors and absorbers, the data was obtained from database NEA N ENDF/B-VII.1 using JANIS software and ploted using mathplotlib

中子截面英语:Neutron cross-section)常用于核物理学与粒子物理学中,表示入射中子与靶核交互作用的一种带有机率意义的常数。单位以barn表示,等于10cm。中子截面与中子通量、核反应速率计算有关,例如:计算一座核电厂的功率。

英语百科

Neutron cross section 中子截面

U235 fission cross section
Interpretation of the reaction rate with the help of the cross section
Scattering (full line) and absorption (dotted) crossections of light element commonly used as neutron moderators, reflectors and absorbers, the data was obtained from database NEA N ENDF/B-VII.1 using JANIS software and ploted using mathplotlib

In nuclear and particle physics, the concept of a neutron cross section is used to express the likelihood of interaction between an incident neutron and a target nucleus. In conjunction with the neutron flux, it enables the calculation of the reaction rate, for example to derive the thermal power of a nuclear power plant. The standard unit for measuring the cross section is the barn, which is equal to 10 m or 10 cm. The larger neutron cross section, the more likely a neutron will react with the nucleus.

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