Radioactive beta decay of carbon-14

Référence de la vidéo 11928117
Radioactive beta decay. Animation of a nucleus of carbon-14 decaying to nitrogen-14 by the emission of a beta particle (blue), slowed down to show it clearly, and an electron antineutrino (not shown). A beta particle is a high-energy electron. In the process of emitting an electron, one neutron (yellow) in the nucleus is converted into a proton (red). This raises the atomic number of the nucleus. At a more fundamental level, this occurs as one down quark in a neutron changes to an up quark, which changes the neutron to a proton and releases a W- boson. This boson decays rapidly into the electron and electron antineutrino. Carbon-14 has a half-life of 5730 years, and its concentration in organic matter is used in the technique of carbon dating.
Licence : Droits gérés
Crédit : Science Photo Library / Equinox Graphics
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Durée : 18 Secondes
Aspect ratio : 16/9
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