Concept information
Terme préférentiel
alpha decay
Définition(s)
- Alpha decay or α-decay is a type of radioactive decay in which an atomic nucleus emits an alpha particle (helium nucleus) and thereby transforms or 'decays' into a different atomic nucleus, with a mass number that is reduced by four and an atomic number that is reduced by two. An alpha particle is identical to the nucleus of a helium-4 atom, which consists of two protons and two neutrons. It has a charge of +2 e and a mass of 4 u. For example, uranium-238 decays to form thorium-234 (Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Alpha_decay)
Concept(s) générique(s)
Synonyme(s)
- α-decay
Traductions
-
français
-
désintégration α
-
radioactivité alpha
-
radioactivité α
URI
http://data.loterre.fr/ark:/67375/MDL-ZN7HS1SM-V
{{label}}
{{#each values }} {{! loop through ConceptPropertyValue objects }}
{{#if prefLabel }}
{{/if}}
{{/each}}
{{#if notation }}{{ notation }} {{/if}}{{ prefLabel }}
{{#ifDifferentLabelLang lang }} ({{ lang }}){{/ifDifferentLabelLang}}
{{#if vocabName }}
{{ vocabName }}
{{/if}}