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The energy required to disassemble a whole into its separate parts. In nuclear physics, it is the energy needed to separate an atomic nucleus into its constituents protons and neutrons.

The process by which unstable atomic nuclei lose energy by emitting radiation, in the form of particles or electromagnetic waves.

The process of inducing radioactivity in a material by bombarding it with neutrons, causing the atomic nuclei to capture free neutrons, becoming heavier and often unstable.

A nuclear reaction or radioactive decay process in which the nucleus of an atom splits into smaller parts, releasing a large amount of energy.

The time required for one-half of the nuclei of a radioactive substance to decay to a new form.

The force that holds protons and neutrons together in the nucleus, overcoming the repulsion between the protons due to their positive charge.

An electrically neutral weakly interacting elementary particle with half-integer spin, which participates only in weak subatomic processes.

The process by which multiple atomic nuclei join together to form a heavier nucleus, accompanied by the release of energy.

The central part of an atom, containing protons and neutrons, and almost all its mass.