Beta decay is a radioactive decay process that occurs when a nucleus emits a beta particle. It is one of the three main types of radioactive decay, along with alpha decay and gamma decay. Beta decay is a fundamental process in nuclear physics and has important applications in fields such as medicine, energy production, and materials science.
Definitions
Beta decay is a type of radioactive decay in which a nucleus emits a beta particle, which is either an electron or a positron. Beta decay occurs when a nucleus has too many or too few neutrons relative to the number of protons, and it is a way for the nucleus to become more stable.
Origin
Beta decay was first observed in 1896 by Henri Becquerel, who discovered radioactivity. The phenomenon was later studied by Ernest Rutherford, who identified the three types of radioactive decay. The name “beta” comes from the second letter of the Greek alphabet, beta, which was used to distinguish this type of radiation from alpha and gamma radiation.
Meaning in different dictionaries
According to the Merriam-Webster dictionary, beta decay is “the radioactive decay of an atomic nucleus in which a beta particle is emitted.” The Oxford English Dictionary defines it as “the spontaneous transformation of a radioactive nucleus in which a beta particle is emitted.”
Associations
Beta decay is associated with nuclear physics, radioactivity, and particle physics. It has important applications in fields such as nuclear medicine, where it is used in imaging and cancer treatment, and nuclear energy, where it is used to generate electricity.
Synonyms
Synonyms for beta decay include beta emission, beta radiation, and beta particle decay.
Antonyms
There are no antonyms for beta decay, as it is a specific type of radioactive decay.
The same root words
The root words of beta decay are “beta” and “decay.” Beta comes from the Greek letter beta, which is the second letter of the alphabet. Decay comes from the Latin word decadere, which means “to fall off” or “to decay.”
Example Sentences
- Beta decay is a fundamental process in nuclear physics.
- The beta decay of carbon-14 is used in radiocarbon dating.
- Beta decay can be either beta-minus decay, in which an electron is emitted, or beta-plus decay, in which a positron is emitted.
- The beta decay of iodine-131 is used in the treatment of thyroid cancer.
- Beta decay is a type of radioactive decay that occurs when a nucleus has too many or too few neutrons relative to the number of protons.