Using basic concepts of cross sections, mean free paths for neutron travel, reproduction constants, and an expression for estimating the critical size of a self-sustaining nuclear chain reaction, it is possible to understand the dimensions of Enrico Fermi’s CP-1 nuclear pile. This development is suitable for undergraduate students, can be covered in one or two class periods, and can serve as a source of exercises.

中文翻译：

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估计费米 CP-1 核堆的大小：课堂方法

使用横截面的基本概念、中子运动的平均自由程、复制常数和估计自持核链式反应的临界尺寸的表达式，可以理解恩里科·费米的 CP-1 核堆的尺寸。此开发适合本科生，可在一两节课中涵盖，并可作为练习的来源。