Physics A change in the identity or characteristics of an atomic nucleus that results when it is bombarded with an energetic particle, as in fission, fusion, or radioactive decay.
More example sentences
- Many ideas were set afloat, ranging from radioactive decay to nuclear reactions of various kinds.
- These nuclear reactions are called fission and fusion.
- When we say that iron has the highest binding energy of all the elements, we mean that iron has the least total energy per nucleon, leaving no energy to give up in a nuclear reaction such as fission or fusion.