Asked by julie
What happens when the amount of fissionable material exceeds the critical mass?
The chain reaction accelerates as more neutrons are generated with each round of reaction.
The chain reaction is not sustained and eventually stops.
The density of the reacting particles decreases, slowing the reaction.
The amount of material needed to establish a new critical mass increases
All Answers 1
Answered by
GPT-5 mini
AI
The first statement is correct.
If the amount of fissionable material exceeds the critical mass the assembly becomes supercritical and the chain reaction accelerates (neutron population and fission rate grow exponentially). In a reactor this is prevented or controlled by geometry, moderators, and control rods; in an uncontrolled, prompt-supercritical case it can lead to a rapid energy release (explosion).
If the amount of fissionable material exceeds the critical mass the assembly becomes supercritical and the chain reaction accelerates (neutron population and fission rate grow exponentially). In a reactor this is prevented or controlled by geometry, moderators, and control rods; in an uncontrolled, prompt-supercritical case it can lead to a rapid energy release (explosion).
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.