The splitting of atoms and the release of neutrons describes nuclear fission.
The process in which each split atom gives up neutrons which in turn split other atoms is called a nuclear fission chain reaction.
Nuclear chain reaction
A nuclear chain reaction. This is what happens in a nuclear reactor.
The act of an atom splitting is called nuclear fission. In nuclear fission where we see neutrons emerge with fission fragments, and we then see those neutrons initiate other fission reactions is called a nuclear fission chain reaction.
This is a nuclear fission chain reaction. An atom of fissile material spontaneously splits (fissions), and neutrons released in this fission event initiate other fission events. Still more neutrons are released, and they cause more fissions, and a chair reaction is under way.a nuclear reactionit is called a chain reaction.chain reaction
Neutrons
yes but only High-energy neutrons or protons can split atoms
Graphite is a "moderator" that slows down the fast neutrons which are produced during the fission process. Fast neutrons are captured by uranium-238 atoms removing them from the chain reaction process. Slow "thermal" neutrons avoid uranium-238 atoms and easily split uranium-235 atoms, producing 2 to 3 more neutrons that can continue the chain reaction. For a moderator to be effective it must slow neutrons rapidly (before too many can be captured by uranium-238 atoms and thus removed from the chain reaction). The most effective moderators in decreasing order are: heavy water (D2O), graphite (C), light water (H2O).
When a few atoms undergo fission, they cause many more atoms to split; this process is called an atomic bomb.
Nuclear fission means that in this process the heavy nuclei are split into fragments (or fission products) when bombarded by neutrons and results in release of energy.
Neutrons
Neutrons