What type of radiation is used in radioactive dating

During a beta-minus decay, a neutron converts into a proton, which remains in the atom's nucleus, and a highly energized electron or beta particle.

In the case of carbon-14, its atomic number, which refers to number of protons has an addition of one, while its atomic mass, which refers to total of protons and neutrons, is the same. Carbon-14 has a half-life of 5,730 years, and it is commonly used for radioactive dating.

The object's approximate age can then be figured out using the known rate of decay of the isotope.

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Five Nobel Laureates have been closely involved with the use of radioactive tracers in medicine.

Over 10,000 hospitals worldwide use radioisotopes in medicine, and about 90% of the procedures are for diagnosis.

There is widespread awareness of the use of radiation and radioisotopes in medicine, particularly for diagnosis (identification) and therapy (treatment) of various medical conditions.

In developed countries (a quarter of the world population) about one person in 50 uses diagnostic nuclear medicine each year, and the frequency of therapy with radioisotopes is about one-tenth of this.

When an atom decays, it changes into another isotope, or form, of the same element or into a completely different element, in a process called transmutation.

Different isotopes of the same element differ in the number of neutrons in their nuclei.

The thyroid, bones, heart, liver, and many other organs can be easily imaged, and disorders in their function revealed.

In some cases radiation can be used to treat diseased organs, or tumours.

Some atoms are stable while others are unstable and decay, emitting radiation to achieve a stable state.

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