Chapter 15, Problem 79QP

Interpretation Introduction

Interpretation:

The feature of a chain reaction is to be explained.

Concept Introduction:

Absorption of a slow neutron by uranium $-235$ results in its fission to form other low molecular weight products along with the formation of more neutrons than absorbed. If the product neutrons initiate a more fission reaction in uranium $-235$ , the process will continue until all the fissionable material has decayed. Such a process is called a chain reaction, in which the product of one step becomes the reactant in the subsequent step.