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Plutonium-239 and Uranium-235

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Q: What is the most fissionable material?
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Fissionable material that cannot sustain nuclear reaction?

Sub Critical


What type of reactor makes more fissionable material?

A breeder reactor


What is the technology behind the atomic bomb?

Essentially, a core of fissionable material is impacted to such a degree that it will begin to undergo fission because of loose neutrons impacting the nuclei of the fissionable material. There are two methods, the first is by firing a bullet of fissionable material into a larger mass, and the second is by using conventional explosives to simultaneously concuss the material on all sides.


What is the quantity of fissionable material called that CANNOT sustain a nuclear reaction?

Sub Critical


The smallest amount of a fissionable material that will give a self-sustaining chain reactions is called the?

The smallest amount of a fissionable material that will produce a self-sustaining chain reaction is called the critical mass. This mass of affected by geometry and other factors such as temperature, pressure, and moderator.


Which type of fissionable material is used in an atomic bomb?

Either highly enriched uranium-235 or reactor produced plutonium.


What is required for a chain reaction to start?

Critical Mass is that minimum amount of fissionable material needed to maintain a chain reaction


Why does a chain reaction die out in small pieces of fissionable fuel but not in large pieces?

Because in small samples the probability of a neutron escaping the sample without inducing another fission is bigger. Actually, what matters is the mass of the sample, especially if this mass exceeds the critical mass. Thus, the chain reaction in a smaller sample with sufficiently higher density of fissionable material might not die out, while it dies out in a larger sample with albeit a sufficiently smaller density of fissionable material.


What is define fuel?

Something consumed to produce energy, especially:a. A material such as wood, coal, gas, or oil burned to produce heat or power.b. Fissionable material used in a nuclear reactor.c. Nutritive material metabolized by a living organism; food.


How to make nuclear bomb-?

To make a nuclear bomb, you need the fissionable material such as a Plutonium239 isotope, an explosive to start the nuclear chain reaction, a detonator, and a pusher.


Is plutonium 239 fissionable?

Yes, this isotope is very fissionable and is used in nuclear reactors and nuclear weapons.


Isotope of uranium used in nuclear reactors?

Uranium 235 is the most important isotope of uranium; it is a fissionable isotope used in HWR, PWR, BWR, research reactors and other types of reactors. But it is rare, only 0.72% of natural Uranium is this isotope.The more plentiful Uranium 238 isotope is only fertile not fissionable; it can only be used in fast reactors to breed Plutonium, which is fissionable. Isotopes of plutonium 239Pu and 241Pu are highly fissionable and importants for nuclear fuels.