FITLINK is one of main programs of NDFMPS that is core nuclear design and fuel management program system, and is a treatment program of crosssection parameter of fuel assembly.
The reaction rate of neutrons with matter depends on the density of neutrons, their velocity, the nuclear density and the particular interaction crosssection.
中子和物质的反应速度与中子的密度、中子的速度、原子核密度以及特有的反应截面有关。
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A pulsed extraction column with an annular crosssection can successfully provide large-cross-section and can be made critically safe for nuclear operation.