193 按源的显著性分类

Classification by significance of the source

(https://www.nuclear-power.com/)

按源的显著性分类

Fusion Systems. Nuclear fusion is a nuclear reaction in which two or more atomic nuclei (e.g.,, D T) collide at very high energy and fuse together. Thy byproduct of DT fusion is a free neutron (see picture). Therefore, nuclear fusion reactions can produce large quantities of neutrons.

聚变系统。核聚变是两个或多个原子核(如D T)以极高能量碰撞并融合在一起的核反应。DT聚变的副产物是自由中子(见图)。因此,核聚变反应可以产生大量中子。

Spallation Sources. A spallation source is a high-flux neutron source in which protons that have been accelerated to high energies hit a heavy target material, causing the emission of neutrons. The reaction occurs above a certain energy threshold for the incident particle, which is typically 5 – 15 MeV.

散裂源。散裂源是一种高通量中子源,其中被加速到高能的质子撞击重靶材料,导致中子发射。反应发生在入射粒子的某个能量阈值以上,通常为5–15 MeV。

注:

(以下内容来自百度百科)

散裂中子源

当一个中等能量的质子打到重核(钨、汞等元素)之后会导致重核的不稳定而“蒸发”出20-30个中子,这样重核“裂开”并向各个方向“发散”出相当多的中子,大大提高了中子的产生效率,按这种原理工作的装置称为散裂中子源。

中国迄今单项投资规模最大的国家重大科技基础设施——中国散裂中子源(CSNS)将在2018年迎来验收,该装置3台谱仪的首批实验计划对外公布,实验覆盖若干前沿交叉和高科技研发领域。

明显微小错报临界值的含义(核言碎语272)(1)

(待续)

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