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A stable nuclear fission reaction will be sustained if every fission produces one additional fission reaction.
Share A chemical reaction that causes the next one
To sustain a fission chain reaction, each fission reaction must result in one more fission reaction. And that one should result in one more, and so on.
A moderator in a fission chain reaction is a system (usually water) that slows neutrons down (decreases their energy) to the point where they can interact with fissile material, causing the fission reaction to be self sustaining. This is necessary because, without the moderator, the neutrons emitted from fission have too much energy to cause subsequent fission. The design of the moderator is such that it provides automatic control of the reaction. As it heats up, the moderation effect decreases, causing the reaction to decrease. Conversely, as it cools down, the moderation effect increases, causing the reaction to increase. In the event that the moderator fails, such as when a depressurization event causes the water to flash to steam, the loss of moderation causes the fission reaction to stop.
another name for nuclear fission is: E=MC squared
The first time a fission chain reaction was produced was in 1942
what is the role of control rods in a fission reaction
For fusion, the main disadvantage is that nobody has been able to make it work. However it does have promise and if it can be developed it will not produce the dangerous fission products that fission does. For fission, see reply to question 'What are the disadvantages of nuclear fission power'
fission..sup
Little Boy is a Nuclear Fission Reaction
Nuclear fission
FISSION. nobody on this website knows the answer..... SHAME