When does nuclear fission occur?

Answer 1

Nuclear fission happens naturally every day.as uranium constantly undergoes spontaneous fission very slowly and emits fission products and neutrons. The uranium-239 isotope in natural uranium normally limits this reaction by capturing these neutrons before they could cause additional fissions of uranium-235 isotopes, preventing a chain reaction.

This process can be accelerated in a nuclear reactor by use of a moderator to rapidly slow the neutrons and thus increase the probability that they will trigger other fissions (instead of being captured by uranium-239 first), by participating in a chain reaction.

This process can be accelerated in an atomic bomb by enriching the uranium to between 20% to 95% uranium-235 isotope to increase the probability that they will trigger other fissions (instead of being captured by uranium-239 first), by participating in a chain reaction.

Answer 2

Nuclear fission occurs by the nucleus of an atom (typically a large atom, like Uranium or Plutonium) spliting to form two new smaller atoms. There is a large binding energy, called the Nuclear force (Strong and Weak) within the nucleus. Much like there is a binding energy that hold componds together (the chemical bonds that hold hydrogen to oxygen to form water), only the nuclear bond is much, much more powerful.

So when the atom slpits, it releases some of this energy in the form of light. however this light is of such a high frequency (meaning it has a lot of energy), it can damage cells and body tissue. You can think of it like the Hulk of UV light.

Answer 3

Fission can occur in two ways: spontaneous and induced. Induced is when a neutron, of just the right amount of energy, not too much and not too little, interacts with (hits) a nucleus and destabilizes it. The nucleus then splits into two, releasing more neutrons and excess binding energy.

Answer 4

Nuclear Fission is the nuclear reaction when one atom collides into another, which splits the atoms apart into lighter elements, which release a lot of energy. Nuclear fission can occur when one mass of an element smashes into another, and that should create quite a nice boom. Another is by charging atoms with electrics, and then force then to smash into something close at the speed of light.

Think of nuclear fission as by putting a couple of marbles on a table. Then, take one marble and throw it at the bunch. The one marble should send the others rolling away, and that's how it works with atoms. Expect that the energy released would probably blow you up before you even get to see how it worked.

Answer 5

In a nuclear reactor