beta decay

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beta decay

A scientist observes beta decay in a cloud chamber.

Definition

Noun: A type of radioactive decay in which an atomic nucleus transforms, emitting a beta particle (an electron or a positron) and a corresponding antineutrino or neutrino. This process changes a neutron into a proton, or a proton into a neutron, thereby transforming the element into a different one.

Usage

This term is used specifically in the fields of nuclear physics and chemistry to describe a fundamental subatomic process. - It is typically used as a non-count noun (e.g., "the process of beta decay"). - It can be modified to specify the type of particle emitted: beta-minus decay (emission of an electron) or beta-plus decay (emission of a positron).

Examples
  • The instability of carbon-14 is due to beta decay.
  • In beta-minus decay, a neutron is converted into a proton.
  • Scientists studied the beta decay spectrum to test the theory.
Advanced Usage
  • Double beta decay: A rare nuclear process where two neutrons undergo beta decay simultaneously.
    • The experiment was designed to search for neutrinoless double beta decay.
  • Allowed beta decay: A decay that satisfies standard selection rules for angular momentum and parity.
  • Forbidden beta decay: A decay that violates these standard rules to some degree.
Variants and Related Words
  • Beta particle (n): The high-energy, high-speed electron or positron emitted during beta decay.
  • Beta radiation (n): The stream of beta particles emitted during radioactive decay.
  • Decay constant (n): A probability constant characterizing the rate of decay, applicable to beta decay.
  • Beta emitter (n): A radioactive substance that undergoes beta decay.
Synonyms
  • β-decay (The Greek letter symbol is a direct synonym).
  • Beta disintegration (A less common, more technical synonym).
Related Phrases
  • To undergo beta decay: The verb phrase describing the action of a nucleus.
    • Tritium undergoes beta decay to become helium-3.
  • Beta decay rate: The speed or probability at which beta decay occurs for a given isotope.
  • Beta decay energy: The total energy released in a beta decay event.
beta decay

A scientist observes beta decay in a cloud chamber.

Noun
  1. radioactive decay of an atomic nucleus that is accompanied by the emission of a beta particle